Ron was really helpful. He remotely adjusted my battery settings on the same day I contacted him, and at a reasonable price. Great service.
Jackie Palman · Jun 2026 Google
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.
Free remote diagnostic · pay only if we fix it — from £75 if remediable remotely
- 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.
Book your free remote diagnosticBattery not discharging?Not affiliated with GivEnergy Ltd. Independent diagnosis and repair.
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
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.
Steve M · Jun 2026 Google
Our SolarEdge PV system with LG batteries had its first hiccup after 8 years of hard work. The Inverter failed. Fortunately I found Solar-Tech-Support who diagnosed the problem very quickly, ordered a replacement unit and fitted it shortly after we received the unit from SolarEdge. Very thorough and professional approach. Thank you, a solid 5 star recommendation.
Les Bennett · Jun 2026 Google
Excellent response to diagnose a problem on our SolarEdge installation. Kept us informed at every step. Diagnosis quickly completed and solution implemented.
Les Bennett · May 2026
I’ve used Ron a couple of times regarding issues with my Givenergy inverter and batteries after Givenergy went bust. My system stopped working properly so it was a stressful time but Ron resolved the issues and got my system working properly again. He’s really helpful and knowledgeable and I wouldn’t hesitate to recommend him and to use him again if the need arose.
Michael Fairhurst · Jun 2026 Google
Start here
4 quick checks before anything else
These checks take under three minutes and eliminate the most common causes without any specialist tools.
1
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.
2
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.
3
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.
4
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.
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
1
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.
2
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.
3
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.
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
1
In the portal go to My Inverter → Export Limit Settings. Check whether export limiting is enabled and what the cap is set to.
2
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.
3
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.
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.
Related guide
GivEnergy solar not generating — full guide
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.
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.
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.
GivEnergy solar charging questions
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.
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.
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.
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.
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.
The remote diagnostic is free. Most 'not charging from solar' cases turn out to be a setting — system mode, a battery pause, or an export limit — that we can spot in your portal data. If we can put it right remotely it's £75, and you only pay if we fix it; anything needing an on-site visit is quoted first, from £245. The remote diagnostic itself costs nothing. If it turns out to be a genuine hardware fault, note that GivEnergy Ltd is in administration and is no longer honouring hardware warranties — so we cover the realistic repair and warranty routes too.
Usually the same day. We read your GivEnergy generation curve, system mode, and export logs in a 30-minute remote session, and you get a written summary of why the battery isn't taking charge from solar — and how to fix it — straight after the call.
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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.
- Not affiliated with GivEnergy Ltd
- Free remote diagnostic — pay only if we fix it
- Most solar charging issues identified from portal data
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