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GivEnergy products · Battery range

GivEnergy batteries — LV GivBats + HV stackable kits

The GivEnergy battery range splits into two architectures. LV GivBat modules (51.2V nominal, LiFePO4 prismatic cell) hang off LV hybrid inverters using RS485 with dip-switch master/slave addressing on the proprietary plug/lug DC+comms cable. HV stackable kits (GIV-BAT-10.2-HV through 20.4-HV) pair with the Gen 3 8.0 hybrid via CAN bus. All specs below are sourced from the official GivEnergy datasheets and manuals — see the post-administration note for what the warranty wording now means.
  • Sourced from the official GivBat datasheets
  • LV (RS485) and HV (CAN) architectures both covered
  • Independent — GivEnergy Ltd in administration since Apr 2026
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Independent of GivEnergy Ltd (in administration since 9 April 2026).

I can’t praise this firm enough. After hearing my solar panels rattling in very windy conditions, I contacted Solar Tech (as my installers no longer trade). Ronald was fantastic at explaining what he thought the issue was likely to be. Communication was great throughout keeping me fully updated. The team worked really hard on the day to carry out the necessary work. I can now sleep soundly at night without worrying about the solar panels on my roof. I would thoroughly recommend this firm. Thank you for sorting the problem out.

Carolyn Addison · Jun 2026 Google

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

STS were incredibly responsive and helpful In diagnosing an issue with my GivEnergy inverter. Although distance meant it was impractical for me to use them to fully solve the issue, I’m grateful for the help and detail they provided. Don is a real professional gent and a hero in my eyes.

Adam Miller · Jun 2026 Google

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

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

Very very helpfuland so quick. Made sure that a non expert like myself understood what the problem was and how to resolve it.

Declan S · Jun 2026

GivBat LV range — key specifications (from datasheets)

Chemistry
LiFePO4 prismatic cell
No cobalt; non-flammable
Nominal voltage
51.2 V
LV (low-voltage) architecture
Comms (LV)
RS485 + dip-switch
Master 0,0,0,0; Slave 1 = 1,0,0,0…
Capacities
2.6 / 5.2 / 8.2 / 9.5 / 5.12 kWh
Gen 1 to Gen 3
Depth of Discharge
80% (2.6, 5.2 Gen 1) · 100% (others)
Per datasheets
Max parallel
Up to 5 (Gen 3 datasheets)
Mix Gen 1/2/3 with rules
IP rating
IP65
Indoor or sheltered outdoor
Warranty (datasheet)
12 years
See post-admin warranty page
Charging temp
0-50°C (Gen 3) · 0-55°C (Gen 1/2)
Inhibited below 0°C
Discharging temp
-10 to 50°C (Gen 3) · -10 to 55°C (Gen 1/2)
Per datasheets
BMS
Robust multi-point, pre-installed
Cell V, temp, current
HV stackable kits
GIV-BAT-10.2/13.6/17.0/20.4-HV
CAN bus, 200-600V range
Overview

Two architectures — LV GivBat modules and HV stackable kits

The GivEnergy battery range has two completely different architectures, and getting them right matters for any expansion or diagnostic. The LV side (Gen 1 through Gen 3 GivBat modules) is 51.2V nominal and uses RS485 over the proprietary plug/lug DC+comms cable with master/slave addressing set by dip switches on each battery. The HV side (Gen 3 stackable kits and the AIO 2 expansion battery) is 200–600V and uses CAN bus. There is no "GivHub" — that is not a real GivEnergy product. The Gen 3 hybrid inverters have in-built WiFi/LAN per datasheet; older Gen 1/2 hybrids use the separate WiFi Dongle.

LV GivBat (Gen 1 / Gen 2 / Gen 3)

· 51.2V nominal, LiFePO4 prismatic cell
· RS485 + dip-switch master/slave addressing
· Plug-to-plug (Gen 2/3) or lug-to-plug (Gen 1) DC+comms cable
· Up to 5 in parallel (Gen 3 datasheet)
· Pairs with Gen 1/2/3 hybrids except the Gen 3 8.0

HV Stackable + AIO 2 Expansion

· 200–600V (kit-dependent — 230V to 460V nominal)
· CAN bus over the orange HV-kit connector
· Pre-built kits: 3/4/5/6 packs of 3.4kWh each
· Pairs with Gen 3 8.0 hybrid (HV-only inverter)
· AIO 2 + MPPT uses the GIV-BAT-13.5-AIO2-E expansion (307VDC)

LV GivBat range

GivBat LV module-by-module specifications

Every spec below is sourced from the official datasheet for that module. Gen 1 small units (2.6, 5.2) are 80% DoD; everything else is 100% DoD. Note: there is no "GivBat 10.2" — that model does not exist in the GivEnergy datasheets. Gen 1 8.2, Gen 2 9.5 and Gen 3 9.5 datasheets explicitly state "Unlimited Cycles / 12 Years"; the Gen 3 5.12 datasheet states "12 Years" with no unlimited-cycles wording.

Giv-Bat 2.6 (Gen 1)

· 2.6 kWh / 51Ah · 80% DoD
· 35.5 kg · 299H × 205D × 480W mm
· Max current 30A · RS485 Modbus
· 26 MWh / 12 Years warranty (datasheet)
· Charging 0–55°C · IP65 · Stackable

Giv-Bat 5.2 (Gen 1)

· 5.2 kWh / 102Ah · 80% DoD
· 63 kg · 515H × 223D × 480W mm
· Max current 50A · RS485 Modbus
· 52 MWh / 12 Years warranty (datasheet)
· Charging 0–55°C · IP65 · Stackable

Giv-Bat 8.2 Unlimited (Gen 1)

· 8.2 kWh / 160Ah · 100% DoD
· 103 kg · 669H × 223D × 480W mm
· Max current 80A · RS485 Modbus
· Unlimited Cycles / 12 Years (datasheet)
· Charging 0–55°C · IP65 · Stackable

Giv-Bat 9.5 (Gen 2)

· 9.5 kWh / 186Ah · 100% DoD
· 110 kg · 800H × 242D × 480W mm
· Max current 80A · RS485 Modbus
· Unlimited Cycles / 12 Years (datasheet)
· Charging 0–55°C · IP65 · Stackable, BMS Upgradeable

Giv-Bat 9.5 (Gen 3) — SKU GIV-BAT-9.5-G3

· 9.5 kWh / 186Ah · 100% DoD
· 85±2 kg · 576H × 225D × 480W mm
· <120A continuous · RS485/USB/CAN, Modbus + CANbus
· Unlimited Cycles / 12 Years (datasheet)
· Charging 0–50°C · IP65 · Up to 5 in parallel

Giv-Bat 5.12 (Gen 3) — SKU GIV-BAT-5.12-G3

· 5.12 kWh / 100Ah · 100% DoD
· 48±2 kg · 338H × 242D × 480W mm
· 60A continuous / 120A peak · RS485/USB/CAN
· 12 Years (datasheet — no "Unlimited Cycles" wording)
· Charging 0–50°C · IP65 · Up to 5 in parallel

USB port on Gen 3 batteries is firmware-update only — per the Gen 3 9.5 manual, "The USB of the battery can only be used for firmware upgrades. Please do not plug your phone or other electronic products into the USB of the battery for charging." The Gen 3 manuals also state explicitly that "All Generation 3 battery cables need to be purchased separately" — plug-to-plug, lug-to-plug, and the blanking plug for unused master ports are not bundled with the battery.

HV stackable kits

HV stackable battery kits — for the Gen 3 8.0 hybrid

The Gen 3 8.0kW hybrid inverter is HV-only — datasheet Battery Voltage Range 120–510V, Communication Interface CAN. It does not accept LV GivBats. Per UKDatasheetStackableBatteriesv2.pdf the HV side ships as pre-built kits with the GIV-BAT-HV-KIT and a count of 3.4kWh battery packs (GIV-BAT-3.4-HV). Comms is CAN bus on the orange HV-kit connector — this is the architecture where the 120-ohm terminator and RJ45 chain language actually applies (unlike the LV side).

GIV-BAT-10.2-HV — 3-pack

· 3 × GIV-BAT-3.4-HV + 1 × GIV-BAT-HV-KIT
· 10.2 kWh capacity · 230VDC nominal
· 119.8 kg · 635H × 380D × 480W mm
· 200–600V range · 25A charge/discharge · CAN bus
· Unlimited Cycles / 12 Years (datasheet)

GIV-BAT-13.6-HV — 4-pack

· 4 × GIV-BAT-3.4-HV + 1 × GIV-BAT-HV-KIT
· 13.6 kWh capacity · 307VDC nominal
· 155.3 kg · 785H × 380D × 480W mm
· 200–600V range · 25A charge/discharge · CAN bus
· Unlimited Cycles / 12 Years (datasheet)

GIV-BAT-17.0-HV — 5-pack

· 5 × GIV-BAT-3.4-HV + 1 × GIV-BAT-HV-KIT
· 17.0 kWh capacity · 384VDC nominal
· 190.8 kg · 935H × 380D × 480W mm
· 200–600V range · 25A charge/discharge · CAN bus
· Unlimited Cycles / 12 Years (datasheet)

GIV-BAT-20.4-HV — 6-pack

· 6 × GIV-BAT-3.4-HV + 1 × GIV-BAT-HV-KIT
· 20.4 kWh capacity · 460VDC nominal
· 226.3 kg · 1085H × 380D × 480W mm
· 200–600V range · 25A charge/discharge · CAN bus
· Unlimited Cycles / 12 Years (datasheet)

Per the stackable batteries manual the minimum stack is 3 packs (10.2-HV) and the maximum is 6 packs (20.4-HV). Commercial systems can parallel multiple stacks. The expansion path here is different from LV — there are no dip switches to set; the kit ships pre-configured.

Operating conditions

Temperature, location and BMS behaviour

GivBats are weatherproofed to IP65 (datasheet) but the BMS protects the cells against temperature extremes regardless. Charging is inhibited below 0°C — physically the cells cannot be charged safely at sub-zero, lithium plating is the failure mode. Discharge is permitted down to about -10°C. Per the GivEnergy "Cold Weather Guide for GivEnergy Batteries", expect roughly 10% capacity reduction at 5°C. There is no internal heater.

What the BMS protects against

· Cell overcharge — stops before Vmax
· Cell over-discharge — stops before Vmin
· Overcurrent on charge or discharge
· Low-temperature charge (lithium plating prevention)
· High-temperature charge or discharge
· Cell imbalance — actively balances over time

Recommended install locations

✓ Internal utility room or plant room
✓ Indoor garage wall (not exposed to frost)
✓ Insulated hallway or service cupboard
→ Unheated detached garage — works but cold-inhibits in winter
✗ Loft space — too hot in summer, KB-explicit against
✗ External wall exposed to rain ingress

Inheriting a system in an unheated outbuilding? The "battery will not charge on a frosty morning" complaint is one of STS's most common winter inbounds, and it is not a fault. The BMS is doing the right thing. See our cold-weather page for the full picture.

Warranty position (post-administration)

What the 12-year warranty actually means now

GivEnergy Ltd entered administration on 9 April 2026. The administrator has confirmed no further hardware warranties will be honoured by GivEnergy Ltd. The 12-year warranty figure remains on every datasheet, but the original-manufacturer route to claim it is closed. Alternative recovery routes that may still produce a result:

Routes that may still work

· Installer workmanship cover (if installer still trading)
· Insurance-backed guarantee (IBG) certificate
· Section 75 — Consumer Credit Act if paid by credit card
· MCS Consumer Code — for MCS-certified installs
· Consumer Rights Act 2015 — against retailer/installer

What does NOT work

✗ Direct manufacturer warranty claim to GivEnergy Ltd
✗ "Register the warranty" route — desk is closed
support@givenergy.co.uk for hardware warranty
✗ "GivEnergy Approved Installer" certification scheme

See the dedicated GivEnergy warranty page for the full walk-through of each alternative route. STS can prepare an engineer report identifying the fault and confirming it is not caused by installation error — required evidence for any of the routes above.

FAQ

GivEnergy battery questions

Per the datasheets: GivBat 2.6 Gen 1 (2.6 kWh, 80% DoD), GivBat 5.2 Gen 1 (5.2 kWh, 80% DoD), GivBat 8.2 Gen 1 Unlimited (8.2 kWh, 100% DoD), GivBat 9.5 Gen 2 (9.5 kWh, 100% DoD), GivBat 9.5 Gen 3 (9.5 kWh, 100% DoD), and GivBat 5.12 Gen 3 (5.12 kWh, 100% DoD). All are LV 51.2V nominal LiFePO4 modules. The HV side uses pre-built stackable kits — GIV-BAT-10.2-HV (3 packs, 230VDC), GIV-BAT-13.6-HV (4 packs, 307VDC), GIV-BAT-17.0-HV (5 packs, 384VDC) and GIV-BAT-20.4-HV (6 packs, 460VDC). There is no "GivBat 10.2" LV — that model does not exist in any datasheet.
Per the GivBat 5.12 Gen 3, GivBat 9.5 Gen 3 and GivBat 9.5 Gen 2 manuals, LV inverter-to-battery comms are RS485 over the proprietary plug-to-plug or lug-to-plug DC+comms cable. Master/slave addressing is set on dip switches on each battery itself (Master = 0,0,0,0 ; Slave 1 = 1,0,0,0 ; Slave 2 = 0,1,0,0 ; Slave 3 = 0,0,1,0 ; Slave 4 = 0,0,0,1). There is no RJ45 chain and no 120-ohm terminator plug on the LV side — that is the HV stackable architecture (CAN over RJ45), not LV.
Yes per the Gen 3 manuals — Gen 1/2 GivBats can be mixed with a Gen 3 master on the same string with the right adapter cable (lug-to-plug if Gen 1 is involved; plug-to-plug for Gen 2/3 only). The Gen 3 battery must be set as Master, the Gen 1/2 batteries as Slaves, and per the Gen 3 manuals a DC isolator is required between different generations to protect the slave battery(s). All batteries must be on compatible firmware. Maximum stack is 5 regardless of mix.
LiFePO4 chemistry typically retains 80% capacity at 4,000–6,000 cycles, so for a one-cycle-per-day household that is roughly 11–16 years of useful life. The manufacturer warranty on the GivBat range was 12 years (the 8.2 Gen 1, 9.5 Gen 2 and 9.5 Gen 3 datasheets explicitly add "Unlimited Cycles"; the 5.12 Gen 3 datasheet says "12 Years" with no unlimited-cycles wording). POST-ADMIN: GivEnergy Ltd entered administration on 9 April 2026 and the administrator has confirmed no further hardware warranties will be honoured by GivEnergy Ltd — the recoverable routes are installer cover, IBG, Section 75 and MCS Consumer Code. See the warranty page.
Per the GivBat datasheets and the GivEnergy "Cold Weather Guide for GivEnergy Batteries" KB, charging is inhibited below 0°C to prevent lithium plating — irreversible cell damage caused when lithium ions cannot intercalate into the anode at low temperature. Discharge is permitted down to about -10°C. The battery resumes charging automatically once cell temperature rises above the threshold. Expect roughly 10% capacity reduction at 5°C. There is no internal heater in the GivBat range. If your battery is in an unheated outbuilding this is the behaviour to expect on cold mornings — not a fault.
On LV systems the top causes per the Gen 3 manuals are: (1) dip-switch addressing on the new or moved battery clashes with the master or another slave — every battery in the stack needs a unique address; (2) the plug-to-plug or lug-to-plug cable is not fully seated in the right ports; (3) firmware mismatch between master and slave (manuals state explicitly "All batteries must be on compatible firmwares"); (4) the DC MCB on the battery is in the OFF position; (5) on Gen 1 ring-lug units the lug torque is incorrect. On the HV stackable side, the CAN over RJ45 architecture has its own troubleshooting flow. STS reads battery state over modbus and identifies the cause without needing a site visit. See battery comms fault guide.
Yes — see our battery expansion guide. LV inverters (Gen 1, Gen 2, Gen 3 3.6 and Gen 3 5.0) take up to 5 GivBat units in parallel. The Gen 3 8.0 hybrid is HV-only (datasheet: Battery Voltage Range 120–510V, Communication Interface CAN) and takes the GIV-BAT-13.6-HV / 17.0-HV / 20.4-HV stackable kits. AIO 2 + MPPT supports up to two GIV-BAT-13.5-AIO2-E expansion batteries (HV, 307VDC, 15-year warranty per datasheet).
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