Why is my GivEnergy battery not charging from solar panels?

The most common causes are: wrong system mode (Timed Discharge prevents solar charging — switch to Eco Mode), battery already full (check the SoC in the portal), export limit throttling solar output before it can reach the battery, battery paused via Remote Control, or low solar generation due to shade, cloud cover, or dirty panels. Check the portal for real-time solar readings to confirm whether the panels are generating before investigating the battery.

My solar panels are generating but the battery isn't charging — what's wrong?

If solar generation is confirmed but the battery SoC isn't rising, check these in order: is the system in Timed Discharge mode (which blocks charging)? Is the battery already at its maximum SoC? Is the battery paused via Remote Control? Is there an export limit reducing the available power? Is the battery in temperature lockout? Any of these can prevent solar charging even with good generation.

What system mode should I use to charge from solar on GivEnergy?

Eco Mode is the primary solar-first mode on GivEnergy. It will charge the battery from solar surplus automatically — when solar output exceeds home demand, the surplus goes into the battery. Timed Charge will also allow solar charging during the day. Timed Discharge is the only mode that actively prevents solar charging by discharging the battery instead.

Does an export limit affect GivEnergy battery charging from solar?

Yes, it can. Export limiting restricts how much power the inverter can push back to the grid — but it also reduces total inverter output. On systems with aggressive export limits (such as 0W or 3.68kW caps), the available power for battery charging can be constrained during periods of high solar generation. If solar is being curtailed to meet the export limit before the battery is full, you may see reduced or absent solar charging on high-irradiance days.

Could cold weather cause my GivEnergy battery to stop charging from solar?

Yes. GivEnergy lithium batteries have built-in low-temperature protection. If battery cell temperature falls below approximately 0°C, the Battery Management System (BMS) will block all charging — including from solar — to prevent lithium plating and cell damage. This is normal protective behaviour. The battery will resume solar charging automatically once it warms above the threshold.

Fault guide · GivEnergy battery

GivEnergy Battery Not Charging from Solar — Diagnostic Guide

Solar panels generating but the battery SoC stays put. This is usually a settings issue — system mode, SoC limits, export limiting, or a battery pause — not a hardware fault. This guide covers every cause in order of likelihood.

Book GivEnergy diagnosis GivEnergy problems hub

Written from real diagnostic experience
Covers all GivEnergy hybrid models
All-in-One, Gateway2, Gen 2, Gen 3

Worked through this and battery still won't charge from solar?

Solar charging issues are often buried in portal data — CT clamp readings, generation curves, and export logs tell the real story. We review your monitoring data remotely and identify the exact cause.

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Not affiliated with GivEnergy Ltd. Independent diagnosis and repair.

5.0

13 Trustpilot reviews

Trustpilot Google

I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 2026 Trustpilot

Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!

Philip · Apr 2026 Trustpilot

Ian · May 2026 Trustpilot

Sree · May 2026 Trustpilot

Dennis Brown · May 2026 Trustpilot

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Mr Machin · May 2026 Trustpilot

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Christopher · Apr 2026 Trustpilot

customer · Apr 2026 Trustpilot

Andy Thomas · Apr 2026 Trustpilot

Philip · Apr 2026 Trustpilot

All problems Battery not charging solar Battery not charging overnight Solar not generating Portal offline CAN comm fault Red light flashing Eco Mode Export limit Tariff optimisation Fault codes →

Start here

4 quick checks before anything else

These checks take under three minutes and eliminate the most common causes without any specialist tools.

Confirm solar is actually generating

Open the GivEnergy portal or app and look at the live Solar power reading. It should show a positive kW value above 0.5–1 kW on a clear day. If it shows zero or a negligible figure, the issue is with generation itself — not with battery charging. Check for shade, dirty panels, or a tripped inverter before going further. See the solar not generating guide if generation is the problem.

Check system mode — Timed Discharge blocks solar charging

Go to givenergy.cloud → My Inverter → System Mode Settings. If the mode shows Timed Discharge, the inverter is actively pushing power out of the battery and will not charge from solar at the same time. Switch to Eco Mode during daylight hours. Eco Mode is the solar-first mode — it automatically routes surplus solar into the battery.

Check the battery state of charge (SoC)

Check the current battery SoC in the portal or app. If it reads 100% — or close to the maximum set in Battery Options — there is simply no room to charge. The system is working correctly. This is one of the most common "false faults" we see: the battery is full and the homeowner expects it to keep charging. Also check My Inverter → System Mode Settings → Battery Options → Operating Range — if the maximum SoC is set below 100%, the battery won't charge beyond that level.

Check whether the battery is paused via Remote Control

In the portal go to My Inverter → Remote Control → Battery and check the Pause Battery setting. If it shows Paused, the battery is deliberately halted — it will not charge from solar (or any source) regardless of generation levels or system mode. Change it to Not paused to restore normal operation.

ℹ

Important distinction: This guide covers the battery not charging from solar panels that are generating. If your solar panels are not producing power at all, that is a different fault — start with the solar not generating guide instead.

Cause 1 — most common

Most common

Wrong system mode — Timed Discharge prevents solar charging

Timed Discharge is designed to empty the battery during peak-price periods. When active, the inverter is pushing energy out of the battery — it cannot simultaneously accept solar charge. If a Timed Discharge window is active during daylight hours, solar surplus will export to grid instead of going into the battery.

Blocks solar charging

Timed Discharge

Actively empties the battery during the set window. While discharging, solar surplus exports to grid rather than charging the battery.

Use for: peak-rate avoidance to sell stored energy or avoid high-rate import.

Solar-first — correct

Eco Mode

Solar surplus charges the battery automatically. Home demand is met by solar first, then battery, then grid — in that priority order.

Use for: flat-rate tariffs and anyone who wants solar to charge the battery during the day.

Also allows solar charge

Timed Charge

Forces grid charging during a set window. Outside the window, solar surplus can still charge the battery — though the primary intent is grid charging during cheap-rate hours.

Use for: time-of-use tariffs where you want to fill the battery at cheap overnight rates.

How to switch to Eco Mode for solar charging

Log into the portal and go to System Mode Settings

Log into givenergy.cloud, click My Inverter, then navigate to System Mode Settings. The currently active mode is highlighted.

Select Eco Mode

Click Eco Mode and press Submit. The change takes effect within a few minutes. You do not need to restart the inverter.

Watch the live power flow

In the portal, return to the live overview. When solar generation exceeds home consumption, you should see the excess routing into the battery (battery power figure positive, SoC rising). If the battery SoC still isn't rising, check the remaining causes below.

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Note on Eco Mode and grid charging: Eco Mode does not force charge from the grid overnight. If you need overnight grid charging on a time-of-use tariff, use Timed Charge for the overnight window and switch to Eco Mode during the day to capture solar. See the Eco Mode and system modes guide for the full picture.

Cause 2

Very common

Battery is full — SoC at maximum or operating range cap

GivEnergy will not charge the battery beyond its maximum SoC. This is correct behaviour — not a fault. There are two separate settings that define the maximum, and either can prevent solar charging from appearing to happen.

CHECK THIS FIRST

Current SoC in live monitoring

Look at the battery SoC in the portal right now. If it shows 100% (or close to it) on a sunny afternoon, the battery charged successfully earlier in the day — there's nothing left to fill. This is the system working correctly. Solar surplus at this point will export to grid rather than charge a full battery.

Where: Portal dashboard → Battery icon → Current SoC percentage

CHECK THIS TOO

Operating Range maximum SoC

The Operating Range slider in Battery Options sets the ceiling for charging. If it's set to 80%, the battery will never charge above 80% from any source — including solar. If you've recently had a firmware update or someone changed this setting, it may be limiting charging unexpectedly.

Where: givenergy.cloud → My Inverter → System Mode Settings → Battery Options → Operating Range slider

Cause 3

Common on restricted connections

Export limit throttling solar output before battery can charge

Many grid connections have an export limit imposed by the Distribution Network Operator (DNO) — typically 3.68 kW or less. The GivEnergy inverter enforces this by curtailing its total output. On high-irradiance days, the inverter may throttle solar output to stay within the export cap, which can reduce or block battery charging.

How export limiting affects battery charging

Without export limiting

Solar charges the battery fully, then excess power flows to grid. The inverter can operate at maximum solar capacity for charging.

With aggressive export limit

If the export limit is 0 kW (zero export), the inverter must consume all solar within the home or battery. On a bright day with a full battery and low home consumption, solar output may be completely curtailed — no generation, no charging.

How to check export limit settings

In the portal go to My Inverter → Export Limit Settings. Check whether export limiting is enabled and what the cap is set to.

If export limiting is active, check your portal's live power flow on a sunny day. If solar output appears low despite clear skies, the inverter may be curtailing generation to stay within the limit.

If the export limit was set by your DNO or installer during commissioning, do not increase it beyond the approved value — this is a G98/G99 compliance requirement. Contact your installer if you believe the limit is set incorrectly.

ℹ

Zero export systems: Some installations have a hard zero-export requirement (common on commercial properties or sites with limited grid headroom). On these systems, the GivEnergy inverter is specifically configured to never export — which means solar output is strictly limited to what the home and battery can absorb at any moment. If your battery is full and home demand is low, solar generation will appear to stop entirely.

📤

Full guide

GivEnergy export limit — full guide

How export limiting works on GivEnergy, how to check and adjust the setting, and DNO compliance requirements.

Read the export limit guide →

Cause 4

Check the basics

Low solar generation — not enough surplus to charge the battery

GivEnergy charges the battery from surplus solar — power that exceeds what the home is already consuming. In Eco Mode, if solar output barely covers home demand, there's little or nothing left to put into the battery. This is especially common in winter, on overcast days, and when panels are dirty or shaded.

Reasons solar output may be insufficient

→Cloud cover and weather: UK solar output drops significantly in winter and on overcast days — sometimes to under 10% of rated capacity. The battery may charge slowly or not at all on grey days.

→Panel shading: Even partial shade on one panel (from a chimney, tree, aerials, or neighbouring property) can dramatically reduce output — particularly on string inverter systems where one shaded panel reduces the whole string.

→Dirty panels: Moss, bird droppings, and grime reduce output. Panels that haven't been cleaned in 2–3 years may be losing 10–20% of their capacity.

→High home consumption: If the home is consuming more power than solar generates (heating, EV charging, hot water, appliances), all solar is used in-home — nothing is left for the battery.

→Panel orientation and angle: North-facing or low-pitch panels generate significantly less than south-facing 35° panels. East/west split arrays generate more in morning/evening but less at peak midday.

→Panel degradation: Solar panels lose approximately 0.5–1% of capacity per year. Older arrays (10+ years) may generate noticeably less than their rated output.

How to check whether low generation is the issue

Compare your portal's solar output against your system's rated capacity on a clear, sunny day around solar noon (roughly 12:00–14:00 BST). A 4 kW system on a cloudless June midday should generate close to 3.5–4 kW. If it's generating significantly less, low generation is contributing to the lack of battery charging.

Useful tool: pvoutput.org allows you to compare your system's daily generation against other systems of similar size and orientation in your area — a useful baseline check for whether your panels are underperforming.

☀️

How to diagnose why solar output is zero or abnormally low — covers inverter faults, DC isolation, panel issues, and portal readings.

Read the solar generation guide →

Cause 5 — cold weather

Cold weather

Low temperature lockout — BMS blocking all charging below 0 °C

GivEnergy lithium batteries include built-in low-temperature protection. If battery cell temperature falls below approximately 0 °C, the Battery Management System (BMS) refuses to accept a charge current to prevent lithium plating and irreversible cell damage. This applies to all charge sources — including solar. It is protective behaviour, not a fault.

How to check for temperature lockout

→Open the portal and go to My Inverter → Event Log

→Look for BMS temperature events or low-temperature fault codes in recent entries

→Check the battery temperature reading if displayed in the portal overview — values below 5 °C indicate the battery is approaching the lockout threshold

→Compare timing: did the charging stop during a cold snap or overnight frost? If yes, temperature lockout is the likely cause

What to do

Temperature lockout is temporary and self-resolving — the battery will resume charging automatically once it warms above the threshold. No intervention is needed.

If your battery experiences frequent winter temperature lockouts, consider insulating the area around the battery installation. GivEnergy does not recommend installations in fully exposed, unheated outdoor locations.

Note: GivEnergy batteries have an operating charge temperature range of 0 °C to 50 °C (Gen 3) or 0 °C to 55 °C (Gen 1/2). Discharge can occur at lower temperatures than charge. If the battery discharges but won't charge, temperature is a strong candidate.

Cause 6 — hardware

Less common

Hardware fault — inverter, CT clamp, or BMS issue

If you've confirmed system mode, SoC, export limit, generation levels, and temperature are all fine, a hardware fault may be preventing solar charging. The most likely candidates are a CT clamp error (inverter misreading solar or grid), a BMS fault inside the battery, or an inverter communication failure.

CT clamp error — inverter misreading solar output

GivEnergy systems use CT clamps to measure both grid and solar current. If the solar CT clamp is installed incorrectly or has become loose, the inverter may be misreading solar generation. A solar CT clamp that reads zero or negative will make the inverter "think" no solar is available — so no battery charging is triggered even when panels are generating.

Signs of CT clamp error

→Solar shows as zero in the portal on a sunny day

→Grid reading shows export at night with no solar (inverted direction)

→Monitoring shows implausible power flow directions

What to do

Do not touch the CT clamps — they sit on live cables. A remote diagnostic can confirm whether CT clamp readings appear correct from portal data. If a fault is confirmed, a site visit by a qualified engineer is required to reposition or replace the clamp.

BMS or battery communication fault

A fault in the battery's BMS or a CAN communication error between inverter and battery can prevent charging from any source. Check the portal event log for battery-related fault codes or comms errors. A red or amber LED on the battery unit itself is a strong indicator of a hardware fault requiring engineer attention.

Do not open the battery enclosure. All diagnostic steps are done via the portal, app, and inverter display only. BMS and battery hardware faults require a qualified GivEnergy-trained engineer to diagnose and repair.

🔌

Hardware diagnostics

LED status codes, isolator positions, restart sequence, and hardware checks.

Read the hardware diagnostics guide →

📡

CAN communication fault

Inverter and battery comms errors — causes, portal indicators, and fixes.

Read the CAN fault guide →

When to get professional help

YMYL

When to stop self-diagnosing and call an engineer

Call now — do not wait

⚠Red LED on inverter or battery with no obvious cause

⚠Burning smell, scorch marks, or visible physical damage anywhere on the system

⚠System trips the consumer unit breaker repeatedly

⚠Portal shows fault codes in the BMS or inverter error category

Book a remote diagnostic

→All portal settings appear correct but battery still won't charge from solar

→Solar output appears unexpectedly low and you've ruled out weather and shading

→Portal power flow readings look inverted or implausible

→You've worked through this guide and can't isolate the cause

⚠️

Safety: All diagnostics on this page are done through the GivEnergy portal and app only. Do not open the inverter, battery enclosure, or consumer unit. Do not touch CT clamps, DC cables, or any electrical connections. Solar panels generate voltage even on cloudy days — the DC side of the system is live whenever any light reaches the panels.

Solar and battery behaviour is clearest in monitoring data

We review your portal generation curves, CT clamp readings, and power flow logs to find the exact cause. Most solar charging issues are identified and resolved in a single remote session.

Book remote diagnostic

Related GivEnergy pages

☀️

Solar not generating

Zero or abnormally low solar output — inverter faults, DC isolation, and panel issues.

🌙

Battery not charging overnight

Battery not charging from grid during cheap-rate windows — Timed Charge, CT clamp, SoC limits.

⚡

Eco Mode explained

How Eco Mode, Timed Charge, Timed Discharge, and Timed Export work — and which to use when.

📤

Export limit settings

Configuring and troubleshooting GivEnergy export limiting — DNO caps, zero export, G98/G99.

This is a brand-specific version of our general battery not charging guide, which covers all brands.

FAQ

GivEnergy solar charging questions

Why is my GivEnergy battery not charging from solar?

The most common causes in order of likelihood: the system is in Timed Discharge mode (which prevents solar charging — switch to Eco Mode), the battery is already at its maximum SoC (no room to charge), the battery is paused via Remote Control, an export limit is restricting solar output, low solar generation due to cloud/shade/dirty panels, or a temperature lockout below 0°C. Check the portal for live solar readings and current SoC before investigating further.

My solar is generating but battery SoC isn't rising — what's the cause?

If solar is generating (confirmed by a positive kW reading in the portal) but battery SoC isn't rising, check these in order: is the system in Timed Discharge mode? Is the battery already at or near 100%? Is the battery paused via Remote Control? Is an export limit restricting total inverter output? Is the solar output covering home demand with very little surplus left over? Each of these can independently prevent solar from reaching the battery.

What GivEnergy mode do I need to charge the battery from solar?

Eco Mode is the solar-first mode — it automatically routes surplus solar into the battery before exporting to grid. This is the correct mode for solar battery charging on most systems. Timed Charge will also allow solar charging outside the charge window. The only mode that actively prevents solar charging is Timed Discharge, which forces the battery to empty rather than accept charge.

Can an export limit stop my GivEnergy battery from charging?

Yes. An aggressive export limit restricts total inverter output — if the limit is set very low (or at zero), the inverter curtails solar generation to stay within the cap. On days when the battery is already at a high SoC and home consumption is low, the export limit can cause solar output to be cut almost entirely. This is most obvious on bright summer days when a zero-export system appears to have stopped generating despite sunshine.

My GivEnergy battery charges overnight from the grid but not from solar — why?

If Timed Charge charges the battery overnight but solar doesn't charge it during the day, the most likely cause is that the battery is already full when solar is available (the overnight Timed Charge filled it to 100%), or a Timed Discharge window is active during daylight hours and preventing solar charging. Check whether a Timed Discharge schedule is set for daytime hours in the portal — this is a common oversight on time-of-use tariff setups.

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Battery still not charging from solar? We'll find the cause.

Tell us what you're seeing — what your portal shows for solar generation, what system mode you're in, and what the battery SoC is doing during the day. We'll review your monitoring data and come back with a clear diagnosis.

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Most solar charging issues identified from portal data

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