Battery charging faults are hard to diagnose without access to monitoring logs. We review your charge/discharge data, CT clamp readings, and schedule settings to find the exact cause — most are fixed remotely.
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Brilliant support to get my solar battery working again. I didn’t expect help on a Saturday but Ron answered the phone, listened and sent me the information I needed to get it going, answered questions etc. A brilliant service I’d happily recommend.
Ron was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Called back within a day and gave good advice.
Ron was extremely helpful and tried his best to repair/reset our GivEnergy inverter remotely. In the event he was unsuccessful but he couldn’t have been more helpful. If you have problems with a GivEnergy system please contact him. Highly recommended
Big thanks to Ron. He was incredibly patient and helpful over the phone, taking the time to walk myself and the installer through every troubleshooting step. Through lots of testing he figured out the issue was definitely a hardware issue, which allows us to consider our next steps. Support fees are clear and they operate a “no fix no fee” policy. It is rare to find that kind of honesty combined with dedicated phone support nowadays. I highly recommend Ron, if you need help with your solar system don’t hesitate to give him a call.
A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.
Brilliant support to get my solar battery working again. I didn’t expect help on a Saturday but Ron answered the phone, listened and sent me the information I needed to get it going, answered questions etc. A brilliant service I’d happily recommend.
Ron was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Called back within a day and gave good advice.
Ron was extremely helpful and tried his best to repair/reset our GivEnergy inverter remotely. In the event he was unsuccessful but he couldn’t have been more helpful. If you have problems with a GivEnergy system please contact him. Highly recommended
Big thanks to Ron. He was incredibly patient and helpful over the phone, taking the time to walk myself and the installer through every troubleshooting step. Through lots of testing he figured out the issue was definitely a hardware issue, which allows us to consider our next steps. Support fees are clear and they operate a “no fix no fee” policy. It is rare to find that kind of honesty combined with dedicated phone support nowadays. I highly recommend Ron, if you need help with your solar system don’t hesitate to give him a call.
A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.
These three checks take under two minutes and eliminate the most common causes immediately.
Go to givenergy.cloud → My Inverter → System Mode Settings. If the mode is set to Eco Mode, this is almost certainly your problem — Eco Mode does not force charge from the grid. You need Timed Charge with a window matching your cheap-rate hours. This single setting accounts for the majority of overnight charging failures.
Look at your monitoring data for the moment your cheap-rate window begins. If the battery is already at or near the target SoC, GivEnergy will not charge it further — the system considers the job done. If the battery starts the night at 90% and your target is 90%, nothing will happen. Lower the start-of-night minimum or raise the charge target.
GivEnergy has a "Pause Battery" feature that stops all charging and discharging immediately. It's easy to activate accidentally. In the portal go to My Inverter → Remote Control → Battery and check the Pause Battery setting. It should show Not paused. If it shows "Paused", this is your problem — the battery is deliberately halted regardless of your schedule or system mode.
GivEnergy firmware updates can silently reset system mode settings back to defaults — including wiping your Timed Charge window. Open the portal and check: is the mode still Timed Charge? Is the window still correct? If a recent update reset it to Eco Mode or cleared your schedule, re-entering the settings will fix it immediately.
Safety: Do not open the inverter or battery enclosure. All checks on this page are done through the portal, app, or inverter display only. If you suspect a wiring fault, contact a qualified engineer — do not investigate live electrical connections yourself.
Eco Mode is designed to minimise grid import by using solar intelligently. It will not force the battery to charge from the grid during cheap-rate windows — it simply has no mechanism to do that. If you're on a time-of-use tariff and want overnight charging, you need Timed Charge.
Dynamically optimises charge and discharge based on solar and demand. Will use solar to charge the battery. Will NOT proactively charge from the grid at cheap rates — it has no schedule awareness.
Correct for: flat-rate tariffs where you just want solar optimisation with no overnight grid charging.
Forces the battery to charge from the grid during a window you define. The inverter charges at full power during this window regardless of solar availability or home demand.
Correct for: Octopus Go, Agile, Flux, or any tariff where you want to fill the battery at cheap overnight rates.
How to set Timed Charge correctly
Log into givenergy.cloud, click My Inverter, then navigate to System Mode Settings. You'll see the current active mode highlighted.
Click Timed Charge. Set the start and end time to match your cheap-rate hours exactly. Common windows: Octopus Go 00:30–04:30 · Octopus Flux off-peak 02:00–05:00 · Economy 7 approximately 00:30–07:30 (check your bill). Set the target SoC to 100% unless you have a reason to limit it.
After pressing Submit, refresh the System Mode Settings page and confirm the active mode now shows Timed Charge with your window. The change applies to the next charging window — it does not take effect until the scheduled time arrives.
After the first overnight window, check your monitoring data. You should see grid import during the Timed Charge window and battery SoC climbing. If SoC still didn't move, the mode change may not have saved, or there's a secondary cause — continue through the rest of this guide.
A CT clamp installed in the wrong direction is one of the most frequently missed installation errors on GivEnergy systems. It causes the inverter to read import as export and export as import — which directly prevents charging from activating correctly even when Timed Charge is set up properly.
At night with no solar generation, turn on several high-power appliances (kettle, oven, electric shower). Your portal should show significant grid import (positive value). If it shows negative — export — while you're clearly consuming from the grid, the CT clamp is backwards.
How CT clamps work, how to identify a direction error from portal data, and the correct fix process.
Read the CT clamp guide →GivEnergy will not charge the battery beyond the maximum SoC you've set, and won't charge at all if the battery is already at or above the charge target. Two different settings control this — and either can silently block overnight charging.
In Battery Options, the Operating Range slider sets the maximum charge level. If this is set to 80%, the battery will never charge above 80% — even during Timed Charge. Check this is set to 100% (or your desired maximum) in the portal under My Inverter → System Mode Settings → Battery Options.
If the battery is already at 90% when the cheap-rate window starts and your target is 90%, the system sees no work to do and does nothing. Check your monitoring data to see what SoC the battery is at when your charge window begins. Ensure there's meaningful headroom (at least 20–30%) for the system to fill.
GivEnergy firmware updates occasionally reset system mode settings to factory defaults — wiping your Timed Charge window and reverting to Eco Mode. If overnight charging was working and then suddenly stopped, and you didn't change any settings, a firmware update is a prime suspect.
If a firmware update reset your settings, the fix is simply to re-enter them in the portal. Go to System Mode Settings, re-select Timed Charge, re-enter your charge window times, and press Submit. This is not a hardware fault.
What to do when a firmware update breaks your system — settings resets, new fault codes, and when not to update.
Read the firmware guide →Different Octopus and other smart tariffs require different GivEnergy configurations. Settings that worked perfectly on a previous tariff can cause overnight charging failures when you switch to a new one.
Set Timed Charge with window 00:30–04:30. Target SoC 100%. After the window ends, set Timed Discharge or Eco Mode to use the stored energy during peak hours.
Common mistake: setting the window to 00:00–04:30 misses the actual cheap rate start at 00:30.
Some GivEnergy models integrate natively with Intelligent. Check the Octopus app — if your inverter is listed as compatible, let Intelligent control charging automatically and set GivEnergy to Eco Mode.
If not natively supported, use Timed Charge with window 23:00–05:30 (the Intelligent off-peak period).
Static Timed Charge windows aren't optimal on Agile — prices vary half-hourly. For basic setup, use a broad Timed Charge window of 00:00–06:00 to catch the typically cheapest overnight slots.
For full optimisation, GivTCP with Home Assistant can automate dispatch based on live Agile prices.
If you've confirmed the system mode, CT clamp, SoC limits, and firmware are all correct and the battery still won't charge, the fault may be inside the battery itself. BMS faults, cell imbalance, and over-temperature protection events can all prevent charging without producing an obvious error code in the portal.
GivEnergy lithium batteries include built-in low-temperature protection. If the battery cell temperature drops below approximately 0 °C, the Battery Management System (BMS) will refuse to accept a charge current to prevent lithium plating and long-term cell damage. This is expected behaviour — not a fault.
The battery will resume charging automatically once the temperature rises above the threshold. If your battery is installed in an uninsulated garage or outbuilding and charging stops during cold spells, check the temperature in the portal event log — temperature-related BMS events will show clearly.
Do not open the battery enclosure. Check the portal event log (My Inverter → Event Log) for any recent fault codes. Note the exact code and check the GivEnergy fault code index for its meaning.
If the battery is within its warranty period (typically 5–10 years), a confirmed BMS fault can be a warranty claim with GivEnergy. We can provide a written engineer report identifying the fault which strengthens any warranty submission.
Book a diagnostic to confirmWe review your charge/discharge logs, CT clamp readings, and schedule settings to find the exact cause. Most GivEnergy battery faults are fixed remotely in a single session.
Configure GivEnergy for every major tariff — Go, Agile, Intelligent, Economy 7.
How to identify and confirm a CT clamp direction error from portal data.
What to do when a firmware update breaks settings or behaviour.
If the battery isolator has tripped, the battery can't charge at all — check this first.
This is a brand-specific version of our general battery not charging guide, which covers all brands.
Tell us what you're seeing — what mode you're on, what the monitoring shows overnight, and what you've already tried. We'll review your data and come back with a clear diagnosis.
I’ve worked on hundreds of GivEnergy systems and know the kit inside out. If yours is playing up, my promise is simple — no fix, no fee: just £75 if we fix it, free if we don’t.
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