Sunsynk 5.32 kWh Battery
A 5.32 kWh low-voltage LFP battery module, wall mounted and stackable in parallel up to 32 units.
- Best for large stacked setups
- Installed battery
- 5.32 kWh
- 6,000+ cycles
- Energy: 5.32 kWh nominal (104 Ah at 51.2 V), 4.79 kWh usable at 90% depth of discharge.
- A battery only: it connects to an inverter and Sunsynk's datasheet does not name which ones.
- Rated for more than 6,000 cycles at 90% depth of discharge; up to 32 units (170 kWh) in parallel.
- IP20: indoor use only. The warranty is described by throughput (16 MWh); the datasheet gives no number of years.
Not tested by us
We have not tested the Sunsynk 5.32 kWh Battery. The figures on this page come from the sources listed at the end of the page, checked on 10 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
5.32 kWh
Nominal energy
6,000+
Cycles at 90% depth of discharge
16 MWh
Warranty throughput limit
Specifications
Last checked on 10 November 2026. The grey text under each name explains what the value means.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 5.32 kWh nominal (104 Ah) |
| Usable capacityThe part of the stored energy you can actually use. It is lower than the nominal capacity. | 4.79 kWh at 90% depth of discharge (0.3C, 25 °C) |
| Depth of dischargeHow much of the battery can be emptied without harming it. 90% means 10% is kept in reserve. | 90% recommended |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LFP (lithium iron phosphate) |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | More than 6,000 cycles (25 ± 2 °C, 90% depth of discharge, 0.5C, to 70% end of life) |
| ExpansionExtra battery units that add storage to the same system. | Up to 32 units in parallel, 170 kWh in total |
| Power | |
| Charge and discharge powerHow fast the battery can take in and give out energy. It sets how many devices it can serve at once. | Recommended 50 A, maximum 100 A, peak 150 A for 2 minutes at 25 °C (about 2.6 kW recommended and 5.1 kW maximum at 51.2 V nominal; Sunsynk gives amps, and limits vary with temperature and charge level) |
| Round-trip efficiencyThe share of the energy you put in that comes back out. The rest is lost as heat. | Not stated in the sources we read |
| Backup in a power cutWhether it can keep selected circuits running during a grid outage. | Depends on the inverter: the battery itself is not an inverter |
| Solar | |
| Solar inverterTurns the DC power from solar panels into AC for the home. Built in means no separate solar inverter is needed. | None: this is the battery only. It needs a compatible inverter; Sunsynk's datasheet does not list models |
| Connection and housing | |
| Grid connectionThe supply type it is built for. Check it matches your home's supply. | Not applicable: the battery connects to an inverter (51.2 V nominal, 43.2-57.6 V operating range, low-voltage DC) |
| Dimensions (W × H × D)Width, height and depth of the unit, so you can check that it fits. | 440 × 600 × 133.2 mm, excluding circuit breaker, terminals and hanging boards |
| WeightMatters for lifting, wall mounting and moving it. | 44 kg |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | IP20: for indoor installation. Wall mounted; Sunsynk says it also fits standard 19-inch cabinets |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | Charging 0 to 55 °C (optional heating extends this to -20 °C); discharging -20 to 55 °C; storage -20 to 35 °C |
| Battery heatingA built-in heater that lets the battery charge in cold weather. | Optional, to allow charging down to -20 °C |
| ConnectivityHow you monitor and control it, usually through an app. | CAN 2.0 and RS485 |
| CertificationsSafety and grid standards the maker says the product meets. | CE, UK and UN 38.3 |
| Warranty | |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | Throughput limit of 16 MWh to 70% end of life; the datasheet does not state the number of years |
Compatible with
What Sunsynk says this product works with. Anything not listed here is not confirmed.
- Inverters
- Sunsynk's datasheet does not name compatible inverters. Ask your installer which inverter pairs with it.
- Expansion
- Up to 32 units in parallel (170 kWh).
- Mounting
- Wall mounted; also fits standard 19-inch cabinets.
Rules where you live
An installed battery normally needs a qualified electrician, and in many countries you must also tell your grid operator, especially if it can export. Rules, incentives and tax treatment differ by country: see our country guides for what applies where you live.
Strengths and things to check
Strengths
- 4.79 kWh usable per module
- 6,000+ rated cycles
- Up to 32 units in parallel
- Optional heating for cold charging
- Wall mounted, 44 kg per module
Worth checking before you buy
- A battery only: you need a compatible inverter as well
- IP20, so indoor installation only
- The datasheet does not state a warranty period in years
- No efficiency figure is given
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 10 November 2026
- Page published. Warranty at publication: 16 MWh throughput to 70% end of life, no years stated (Sunsynk G5.3 datasheet v3, 8 April 2023). Sunsynk also sells similar 5.32 kWh models (for example SUN-BATT-5.32 and L5.3) that are not covered here.
Where this information comes from
We have not tested this battery. Every figure above comes from Sunsynk's G5.3 battery datasheet (version 3, 8 April 2023), last checked on 10 November 2026. Sunsynk sells several 5.32 kWh batteries (G5.3, SUN-BATT-5.32 and L5.3 among them) with different housings and ratings, and this page covers the G5.3. A value that the datasheet does not state is shown as not stated.
We do not show prices, because they depend on the installer's quote.
- Manufacturer Sunsynk G5.3 battery datasheet (v3, April 2023)
Spotted an error?
Tell us through the contact form on our About Us page.
Common questions about Sunsynk 5.32 kWh Battery
How much does the Sunsynk 5.32 kWh battery store?
Sunsynk lists 5.32 kWh nominal (104 Ah at 51.2 V) and 4.79 kWh usable at 90% depth of discharge.
Can I use it outdoors?
Sunsynk rates the G5.3 at IP20, which is for indoor installation. A sibling model with a higher rating exists, so check which model you are quoted.
How long is the warranty?
The datasheet gives a throughput limit of 16 MWh to 70% end of life but no number of years. Ask your installer for Sunsynk's warranty letter.
Related guides
Does a modular battery fit your home?
Our calculator uses your own usage and tariff to estimate what a home battery could save, with conservative assumptions.