GivEnergy Battery Calibration:
Fix an Inaccurate SoC Reading
- Soft calibration steps
- Portal calibration button
- Two-battery SoC mismatch
- When to escalate
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.
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.
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
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)
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
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
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.
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.
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.
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.
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.
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.
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!
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.
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.
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
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)
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
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
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.
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.
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.
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.
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.
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.
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!
GivEnergy recommends calibration when…
The Battery Management System tracks charge mathematically — if it hasn't seen the full range in a while, its reference points drift. These are the four signs to watch for.
Percentage looks wrong
The app shows 80% but the battery is clearly low, or it reads full immediately after a short charge
Sudden SoC jumps
SoC drops sharply from 40% to 10% in minutes, or climbs from 20% to 80% without completing a charge
Two batteries differ
Two batteries in the same system show significantly different percentages when they should track together
Installer recommends it
Your installer or GivEnergy Support has asked you to run a calibration cycle to resolve a specific issue
What calibration actually does
GivEnergy batteries use a Battery Management System (BMS) that tracks State of Charge mathematically — it counts energy in and out rather than measuring directly. Over time, especially if the battery has never been fully charged and fully discharged, these reference points drift. Calibration re-establishes the upper (100%) and lower (0%) charge boundaries so the maths lines up with reality again.
Important: Calibration fixes BMS drift — it does not recover lost battery capacity. If your battery genuinely holds less charge than it used to after calibration, that is a capacity degradation issue, not a calibration issue.
Full Charge then Full Discharge
Soft calibration is the standard first step. It works by letting the BMS experience the full range of the battery — from 100% down to the reserve floor — so it can reset its reference points. No portal access or special tools needed.
Let the battery discharge to its Reserve SoC floor
Allow the battery to power the home normally until it reaches the Reserve SoC (typically 10%). Do not manually lower the reserve just for calibration — the floor is where it is for a reason. If you're not sure what your reserve is, check Settings in the app or portal.
Charge fully to 100% during your next off-peak window
Set your charge target to 100% and let the battery charge completely during your off-peak window. For most UK households this is overnight. Use your normal charge schedule — don't change anything else.
Let the battery sit at 100% for at least 30 minutes
Once at 100%, allow the battery to hold that level for at least 30 minutes before it begins discharging. This gives the BMS time to register the upper boundary correctly.
Check the SoC reading over the following 24–48 hours
Monitor the SoC in the app. It should now change more gradually and linearly. One complete cycle is usually enough for minor drift. If the reading still looks wrong, repeat the cycle once more before trying the portal calibration.
💡 For All-in-One (AIO) systems — charge rate tip
The GivEnergy official guide recommends that AIO systems target a charge rate above 3.6 kW — ideally 3.8–4.2 kW — during calibration cycles. This rate helps maintain cell temperature and produces the most accurate BMS recalibration. Check your charge current setting in the app under Settings > Charge Rate and ensure it isn't set too low.
Full Calibration — Portal Calibrate Button
If a full charge/discharge cycle didn't correct the reading, GivEnergy provides a Calibrate Battery button in the portal. This forces a deeper re-evaluation of the battery's internal energy model. Availability depends on your inverter model and firmware version.
Log in to the GivEnergy Portal on a web browser
Go to givenergy.cloud on a computer or tablet. The portal has more options than the mobile app. Log in with your GivEnergy account credentials.
Open My Inverter and navigate to Battery Settings or Remote Control
From the dashboard, select your inverter. Look for Battery Settings, Remote Control, or a Battery tab in the navigation. The exact location varies by firmware version — if you don't see a Calibrate button, try the Remote Control panel.
Click the Calibrate Battery button
The system will tell you if any conditions must be met before calibration can start (for example, a minimum SoC may be required). Follow any on-screen prompts. The calibration process runs in the background — the battery continues operating normally during this time.
Monitor the SoC reading over the next 24 hours
Check the portal's SoC history graph the following day. The reading should now track smoothly. If the Calibrate button is not available for your model, stick with the soft calibration method — two full cycles usually achieve the same result.
The Calibrate button isn't showing for my system
Not all inverter models or firmware versions expose the Calibrate Battery button. If you can't find it, perform two consecutive soft calibration cycles (full charge → full discharge → full charge) and check whether the reading improves. If it doesn't, contact your installer or STS — at that point the issue may be a BMS fault rather than simple drift, which requires a different approach.
Two Batteries Showing Different Percentages
GivEnergy systems with two or more battery units should keep the batteries balanced — their SoC readings should stay within a few percentage points of each other. A large persistent gap between them is one of the signs that calibration is needed.
✓ Normal variation
A few percentage points difference between two batteries during active charge or discharge is normal — they balance throughout the cycle. A difference of 2–5% that converges when the system is idle is not a problem.
⚠ Worth investigating
A persistent gap of 10% or more that doesn't converge when the system is idle, or one battery consistently reading much lower than the other, suggests BMS drift in one unit — calibration is the first step.
Run a full charge to 100% — let both batteries reach 100% together
This is the most important step for dual-battery calibration. Both units must reach 100% simultaneously. If one battery charges to 100% and the other is stuck at a lower percentage, there may be a balancing issue as well as a calibration one.
Let them discharge together through normal household use
Allow both batteries to discharge in parallel — this is the normal operating mode. Monitor whether the gap between them decreases as they discharge. A gap that widens during discharge (one depleting faster) may suggest a genuine capacity difference rather than just calibration drift.
Use the Portal Calibrate button if the gap persists after two cycles
If the readings are still significantly different after two complete charge/discharge cycles, use the GivEnergy portal's Calibrate Battery function. If one battery still reads significantly different after portal calibration, contact your installer — one battery may have a genuine capacity issue.
What to check after calibration
Three quick checks to confirm the calibration worked — and to know when to stop trying yourself and call for support.
Check the SoC history graph in the portal
After calibration, the SoC history graph should show smooth, gradual changes — a steady rise during overnight charge and a gradual fall through the day. Sudden vertical drops or jumps in the history graph indicate the BMS is still struggling — try a second calibration cycle before escalating to support.
Verify the overnight charge is completing correctly
After calibration, the overnight charge should now hit your target SoC (e.g. 100%) within the expected time. If the battery is reaching the target sooner than expected, the BMS now has a more accurate picture of capacity — you may need to adjust your charge schedule start time slightly.
Check the event log for any BMS fault codes
Go to the portal's event log (My Inverter → Event Log) and check for any BMS-related fault codes after the calibration cycle. A clean event log confirms the calibration ran without issues. Any persistent error codes after calibration should be flagged to your installer or STS.
Contact STS if:
You can handle this yourself:
Related GivEnergy guides
Battery Not Discharging
System mode, reserve SoC and schedule issues that stop the battery from powering the home
ProblemBattery Not Charging Overnight
Why off-peak grid charging fails and how to fix charge schedule and mode settings
SetupGivEnergy App Guide
How to read the dashboard, set schedules and monitor SoC history in the app
SetupFull Restart Procedure
If calibration doesn't resolve odd readings, a full restart is often the next step
ProblemCold Weather Performance
Temperature effects that can make capacity appear lower than actual — before blaming calibration drift
GivEnergyGivEnergy Hub
All GivEnergy guides, fault fixes and configuration help in one place
Frequently asked questions
SoC still wrong after calibration?
If the percentage is still significantly off after two cycles and a portal calibration, there may be a BMS fault or a genuine capacity issue that needs a proper diagnostic. Our engineers work on GivEnergy systems regularly — tell us what you're seeing and we'll advise on next steps.
- Remote diagnostic — no visit needed
- GivEnergy-experienced engineers
- Clear report of findings and next steps
Got a solar fault or need a quick answer? Drop us a message — we usually reply within a few minutes. Mon–Fri, 9am–7pm.