Battery Storage
Sunsynk L5.3 5.32kWh IP65
IP65 outdoor-rated LiFePO4 module designed to pair with Sunsynk hybrid inverters. 5.32kWh wall-mount.
£1660.00 ex VAT
How it scores
Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.
Specifications
- Chemistry
- LiFePO4
- IP rating
- IP65
- Weight kg
- 50
- Usable capacity
- 5.05
- Warranty
- 10
- AC / DC coupled
- DC
- Built-in inverter
- No
- Round-trip efficiency
- 95
- Depth of discharge
- 95
What I noticed
The Sunsynk L5.3 is the current 5.32kWh LiFePO4 wall-mount module from the brand best known in the UK for its powerful and configurable hybrid inverter range. The IP65 rating makes it suitable for outdoor wall-mount installs — useful for properties with limited internal utility space.
The L5.3 pairs natively with the Sunsynk Ecco and Lifelynk hybrid inverter ranges, with single-app control over solar generation, battery state, and grid import/export via the Sunsynk Connect platform.
Who it suits
Installs already running or planning a Sunsynk hybrid inverter — the integration is mature and the warranty applies as a system. Also suitable for outdoor wall-mount installs given the IP65 weather rating.
What I'd watch for
Designed for the Sunsynk ecosystem — pairing with non-Sunsynk inverters works but limits some smart features. Higher £/kWh than Pylontech or Dyness — pay this premium specifically for the Sunsynk integration. Stacking limit is 4 modules per Sunsynk inverter.
L5.3 5.32kWh IP65 head-to-heads
Side-by-side scoring vs each alternative in our shortlist.
Other Battery Storage on my shortlist
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