Victron Energy Lithium SuperPack 12,8V/20Ah12.8V 20Ah 256Wh LiFePO4 battery with integrated BMS, M5 terminals

Overview

The Lithium SuperPack 12,8V/20Ah is the smallest SuperPack: 256Wh in a 181×167×77mm housing weighing 3kg, with M5 threaded terminals. It supplies 30A continuously and 80A for 10 seconds, and accepts up to 15A of charge current. Rated capacity is 20Ah at 25°C and 16Ah at 0°C. With its BMS and safety switch built in, it is installed like a conventional battery, without additional protection components.

• Integrated BMS and internal safety switch
• 12.8V from 20Ah to 200Ah, 25.6V 50Ah
• Unlimited parallel connection, no series connection
• 2500 cycles at 80% DoD, 92% round-trip efficiency
• IP43 housing
• Charging blocked below about 0°C from serial HQ2040

How it works

SuperPack batteries combine LiFePO4 cells with an integrated BMS and an internal safety switch, so they need no external protection components. The switch disconnects the battery on over-discharge, overcharge, or a temperature that is too low or too high, and it cuts charge or discharge current when the maximum ratings are exceeded. If a load with high input capacitance, such as an inverter, trips the protection when connected, the battery retries and reconnects after about 10 seconds.

Key features

Cycle life is 2500 cycles at 80% depth of discharge and 25°C, with 92% round-trip efficiency and under 1% capacity loss per 100 cycles. Discharge is possible from -20°C to +50°C and charging from 0°C to +45°C. On units from serial number HQ2040, charging is blocked automatically below about 0°C and resumes above about 3°C, while discharge is blocked below about -20°C. The housing is rated IP43.

Installation and compatibility

SuperPack batteries can be connected in parallel without a set limit, but series connection is not allowed, so each model serves its own nominal voltage of 12V or 24V. Mount them upright or on a long side, never with both terminals facing down; the 12.8V/200Ah model must not lie on the long side that puts the positive terminal at the bottom. Recommended charging is 14.2–14.4V or 28.4–28.8V absorption, preferably for no more than four hours, and 13.5V or 27V float.

Storage and terminals

A fully charged SuperPack can be stored for up to one year at 25°C or below, or three months at up to 40°C, within a storage range of -40°C to +65°C. Terminal sizes depend on the model: M5 threaded inserts on the 20Ah, M6 on the 60Ah, and M8 on the 100Ah, 200Ah and 25.6V/50Ah versions, so cable lugs must be chosen accordingly.

Questions and answers