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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 Gen 2 and Gen 3 batteries the comms share the plug-in power cable; Gen 1 batteries use power cables on lugs and a separate data cable. HV stackable kits (GIV-BAT-10.2-HV through 20.4-HV) pair with GivEnergy's HV hybrids, the single-phase Gen 3 8.0 and 10.0 and the three-phase range, 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.
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  • 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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Contacted Solar Tech about my Givenergy battery storage system that wasn't working. Battery status was "idle". Given the company Givenergy had gone bust, I need independent quality technical help. Very patient and clearly very knowledgeable about battery systems Ron diagnosed possible issues and suggested several possible remedies. Worked our way through them and fortunately it began to work. The fault was very specific and only an experienced engineer would have thought to check. Suffice to say I'll be back if I need independent support again. Lastly you only pay if there is a solution. Outstanding.

Mr P · Jun 2026 Trustpilot

Great service in supplying and fitting an additional GivEnergy battery. Went the extra mile in managing to fit the battery in to a difficult space.

Jules TIlley · Sep 2026 Google

Superb work from Ronald. Cannot recommend highly enough. Figured out my problem late into night, going above and beyond! Many thanks to him

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What a fantastic service. Had my fault diagnosed within minutes and actually managed to resolve the issue remotely within a few minutes more. This guy is like a “Solar Batman” helping consumers fix their problems using his extensive industry knowledge and expertise. Outstanding service. Thank you so much.

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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

Solar Tech Support is an absolute lifesaver. My solar and battery system stopped working completely, but after one quick phone call, they fixed the problem straight away. The original provider, GivEnergy, has gone into administration, leaving me entirely without support from the original installers. It was a terrible situation on GivEnergy’s part, but thankfully, Solar Tech Support came to the rescue!

sohaib maroof · Jul 2026 Google

Written by · Independent Solar Engineer Last updated

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, early 8.2) · 100% (others)
Early 8.2 = sold about 2019 to 2021
Max parallel
Up to 5 (Gen 3 datasheets)
Mix Gen 1/2/3 with rules
IP rating
IP65
Indoor or sheltered outdoor
Warranty
12 years (installed from 11 Sep 2023)
Earlier: 10 years at 70%, check your paperwork
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 (in the plug-in battery cable on Gen 2 and Gen 3, or a separate data cable on Gen 1) 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.

Battery power is a limit of the LV battery system, not of the inverter size. On the Gen 2 and Gen 3 3.6 and 5.0 kW hybrids the battery charges at up to 3.3 kW and discharges at up to 3.6 kW; Gen 1 hybrids give 2.6 kW from the battery. So any LV GivBat system tops out at about 3.6 kW. A bigger stack holds more energy, but it does not charge or discharge faster. HV stacks give about 2.2 kW per pack, so they can do more.

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

· 51.2V nominal, LiFePO4 prismatic cell
· RS485 + dip-switch master/slave addressing
· Gen 2/3: comms in the plug-in power cable · Gen 1: power on lugs, separate data cable
· Up to 5 in parallel (Gen 3 datasheet)
· Pairs with the LV hybrids: Gen 1, Gen 2, and Gen 3 3.6 / 5.0 kW
· Battery power tops out at about 3.6 kW

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 the HV hybrids: Gen 3 8.0 / 10.0 kW single-phase, 6–20 kW three-phase
· 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. The Gen 1 2.6 and 5.2 are 80% DoD. The 8.2 came in two versions under the same name: the first, sold from about 2019 to 2021, was 80% DoD (about 6.6 kWh usable); the 8.2 sold from 2021 is 100% DoD, and the card below is its datasheet. The 9.5 Gen 2 that followed, and the Gen 3 packs, are 100% DoD. More on the 80% packs: our 80% DoD page.

Warranty: the current datasheets print "12 Years" on every pack, even the discontinued Gen 1 ones. That 12-year term applies to systems installed from 11 September 2023. Packs installed before then carried 10 years at 70% capacity, so check your own paperwork.

Giv-Bat 2.6 (Gen 1)

· 2.6 kWh / 51Ah · 80% DoD
· 35.5 kg · 299H × 205D × 480W mm
· Max current 30A · RS485 Modbus
· Datasheet warranty: 26 MWh / 12 Years, for installs from 11 Sep 2023 only; most Gen 1 packs went in earlier (see above)
· 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
· Datasheet warranty: 52 MWh / 12 Years, for installs from 11 Sep 2023 only; most Gen 1 packs went in earlier (see above)
· Charging 0–55°C · IP65 · Stackable

Giv-Bat 8.2 Unlimited (Gen 1)

· 8.2 kWh / 160Ah · 100% DoD (sold from 2021)
· Earlier 8.2 (about 2019 to 2021): 80% DoD, about 6.6 kWh usable
· 103 kg · 669H × 223D × 480W mm
· Max current 80A · RS485 Modbus
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)
· 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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)
· 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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)
· 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
· Warranty: 12 Years, no "Unlimited Cycles" wording (installs from 11 Sep 2023)
· 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 HV hybrids

GivEnergy's HV hybrids do not accept LV GivBats. There are two families. Single-phase: the Gen 3 8.0 and 10.0 kW hybrids (UK launch February 2025; the 8.0 datasheet gives Battery Voltage Range 120–510V, Communication Interface CAN). Three-phase: HV hybrids from 6 to 20 kW (6, 8, 10 and 11 kW models announced in January 2024, then 12, 15 and 20 kW). Battery power is about 2.2 kW per pack, so a bigger HV stack gives more power as well as more storage. Per the GivEnergy Stackable Batteries datasheet, 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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)

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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)

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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)

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
· Warranty: Unlimited Cycles / 12 Years (installs from 11 Sep 2023)

Per the stackable batteries manual the minimum stack is 3 packs (10.2-HV) and the maximum is 6 packs (20.4-HV). The Gen 3 8/10 kW manual adds that up to 4 stacks can run in parallel on the 8 and 10 kW single-phase and the 11, 15 and 20 kW three-phase hybrids. 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 GivEnergy battery warranty means now

GivEnergy's 12-year warranty covers batteries on systems installed from 11 September 2023, with 70% capacity retention, counted from the installation or commissioning date, whichever came first. Systems installed before then keep the terms on their own paperwork: batteries then carried 10 years at 70% capacity. Every current datasheet prints "12 Years", even for older packs, so a datasheet is not evidence of what an older install carries.

GivEnergy Ltd entered administration on 9 April 2026. The administrator has confirmed no further hardware warranties will be honoured by GivEnergy Ltd, so the original-manufacturer route to claim 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.

Related GivEnergy pages

Continue exploring

Gen 3 hybrid inverter

The inverters these batteries pair with — LV (3.6, 5.0) and HV (8.0, 10.0).

See Gen 3 hybrid inverter

All-in-One range

Integrated battery + inverter (original AIO, AIO 3.6, AIO 2 + MPPT).

See All-in-One range

Add extra battery

LV expansion: dip-switch addressing, mixing generations and three refurbished batteries at fixed prices.

Add extra battery

Warranty position

IBG, Section 75, MCS — what is still claimable post-administration.

See warranty position
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 (8.2 kWh), 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). The 8.2 came in two versions under the same name: the first, sold from about 2019 to 2021, was 80% DoD (about 6.6 kWh usable); the 8.2 sold from 2021 is 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).
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, and on these plug-connector batteries comms and power share the plug-in cable. Gen 1 batteries connect power on cable lugs, with a separate data cable on a green pin connector. At the inverter end, Gen 1 inverters also use a green pin connector, Gen 2 inverters have an RJ45 BMS port, and Gen 3 inverters use a plug. 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 between LV batteries and no 120-ohm terminator plug on the LV side. Those belong to the HV stackable architecture (CAN over RJ45).
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. GivEnergy's 12-year warranty covers batteries on systems installed from 11 September 2023, with 70% capacity retention, counted from the installation or commissioning date, whichever came first. Systems installed before then keep the terms on their own paperwork: batteries then carried 10 years at 70% capacity. Current datasheets print "12 Years" even on discontinued packs, so a datasheet is not evidence of what an older install carries. 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) a battery cable (or, on Gen 1, the data 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 Gen 2 inverters, the commonest fault STS sees is the thick BMS comms cable crimped straight into the inverter's RJ45 plug: the cable is too thick for the plug. It is common practice in the field to join it to a thinner Cat5 cable with Wago-type connectors instead, to stop the problem. That is a job for an engineer. 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 BMS Comm Fail 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. A bigger LV stack stores more energy but does not charge or discharge faster: battery power on any LV system tops out at about 3.6 kW. GivEnergy's HV hybrids (the single-phase Gen 3 8.0 and 10.0, and the three-phase hybrids from 6 to 20 kW) do not take LV GivBats. They use the HV stackable kits, 3 to 6 packs per stack, with about 2.2 kW of battery power per pack. AIO 2 + MPPT supports up to two GIV-BAT-13.5-AIO2-E expansion batteries (HV, 307VDC, 15-year warranty per datasheet). We don't recommend GivEnergy for new systems. We still support and supply parts for existing ones.
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