Solplanet ASW5120-LB-G3 battery module5.12kWh 51.2V LFP module for Solplanet low-voltage hybrid inverters

Overview

The ASW5120-LB-G3 is the single building block of the Solplanet Ai-LB-G3 low-voltage battery: a 5.12kWh, 51.2V, 100Ah lithium iron phosphate module with its own BMS, 4.86kWh usable. It delivers 60A recommended and 100A maximum current on its own; one to five modules stack in a tower of up to 25.6kWh. The IP66 module measures 630×320×185mm, weighs 46kg and can stand on the floor or hang on a wall, indoors or outdoors. It pairs with Solplanet 48V hybrids such as the ASW H-S2 series.

• 5.12kWh, 51.2V, 100Ah LiFePO4 module with integrated BMS
• One to five modules per tower, up to 25.6kWh
• IP66 enclosure for indoor or outdoor installation
• Floor or wall mounting, natural convection cooling
• Integrated fire suppression, MOSFET and dual fuse protection
• CAN link to Solplanet H-S2, BH-M2 and SH hybrids

How the system is built

Each ASW5120-LB-G3 module stores 5.12kWh at a nominal 51.2V (100Ah) and carries its own battery management system. Modules stack on a 2.6kg base with plug-in connections, one to five per tower, for 5.12, 10.24, 15.36, 20.48 or 25.6kWh nominal. Usable energy is 4.86kWh per module at 95% depth of discharge, and the 40–58.4V voltage window matches the 40–60V battery input of Solplanet 48V hybrid inverters.

A single module is rated for 60A recommended and 100A maximum charge or discharge current, which corresponds to 3.07kW rated and 5.12kW maximum power. With two or more modules on one set of output cables the tower is limited to 120A, or 6.14kW. For the ASW SH series the manual shows a second set of output cables for up to 210A, connected through the Sol-CB250-LB combiner box.

Installation and compatibility

Solplanet lists the ASW5120-LB-G3 as compatible with the ASW H-S2 single-phase hybrids, the ASW BH-M2 series and the ASW 008/010K-SH series; check the current compatibility list before ordering. With these inverters the battery works in on-grid, off-grid and backup modes and communicates over CAN through the RJ45 Link Port, while a terminal resistor closes the Link Port In of the lowest module.

The module is rated IP66 and protective class II, so it can be installed indoors or outdoors, standing on the floor or fixed to the wall with the supplied L-brackets. Solplanet asks for a solid support surface such as concrete or masonry, no direct sunlight, an altitude below 4000m and a freely accessible battery circuit breaker. Several towers are joined through the Sol-CB125-LB (H-S2) or Sol-CB250-LB (SH) combiner box, each with three tower inputs.

Operation and monitoring

Charging is allowed from -8 to +58°C and discharging from -18 to +58°C; above 3000m the output is derated. Battery status, SOC and alarms are read in the Solplanet App through the connected inverter, and the app can also switch the module LED indicator between five display modes. Solplanet rates the module for 6000 cycles at 0.5C, 90% depth of discharge and 70% end-of-life capacity, with a round-trip efficiency of at least 95%.

Questions and answers