i3 Energy Storage

BMW i3 Battery pack

+

1x Power compute module PCM-2
1x Battery gauge and protection module BGP-9
8x Cell management module CMS-12

=

a happy customer

Energy storage system based on battery packs from the BMW i3 electric vehicle and the intelligent battery management system 1PS BMS. A powerful high voltage battery is ready to power your house, property or company*.

* compatible hybrid inverter required. Currently supported are Goodwe EH, ET, BT, BH hybrid inverters, we are working on support for wide range of inverters.

A second life for the EV battery

When the battery capacity of the electric car is no longer sufficient for longer journeys, it can be replaced with a newer battery in better condition.

But why not use the old one to supply or back up electricity to your house? In combination with solar panels, a hybrid inverter and the 1PS BMS system, the battery is put under much less strain than in a vehicle, allowing it to extend its life considerably.

A drop in battery capacity to 80% is a problem for the owner of an electric vehicle, but for home use the stored energy density to cost ratio is still unbeatable.

The i3 Battery pack

We offer retrofitting your i3 battery with 1PS BMS or providing complete i3 battery storage with battery packs from our partners.

Each of our battery packs is thoroughly inspected and its parameters are measured upon receipt. We only offer fully functional used batteries with a SoH of no less than 80%. The price depends on the SoH and overall condition of the battery pack*.

1PS BMS

The original BMS system is removed from the battery and replaced with a 1PS BMS system that fits exactly in the original positions and allows the use of open communication protocols for accurate battery measurement and protection, contactor control and cell balancing.

Technical data

Dimensions 960 x 1680 x 180mm (w x h x d)
Weight265kg
Nominal capacity20kWh*
VoltageDC 400V
Ingress protectionIP65
Cell typeSamsung SDI 60Ah
Cell count96
DC Connection (to inverter)Fuse box with SolarLock connector
Data connection (to inverter)none/CAN/RS485
Smart passive cell ballancingyes
Over/under temperature protectionyes
Over/under voltage protectionyes
Over/under current protectionyes
State of charge monitoryes
Main and precharge contactorsyes
LAN + Web interface yes
Price (including battery)3000€ + 200€ / kWh*
Price (retrofitting your battery)3100€

* Actual price and capacity depends on the battery state and it is determined upon receipt of the battery.