Solar and Wind Off Grid systems

PV Solar panel for solar off-grid and tied-grid systems

The batteries used to store solar and wind energy are currently mainly lead-acid batteries. Short lifespan and low cycle number of lead acid batteries make it a weak candidate for environment and cost efficiency.

Lithium-Ion batteries allow to equip solar or wind “off-grid” power stations, replacing the legacy banks of lead-acid batteries.

Benefits :

  • A lifetime (number of cycles) well above the lead-acid batteries (over 1500 cycles at 90% depth of discharge)
  • Footprint and weights 2-3 times lower than lead-acid
  • No maintenance required
  • Compatibility with installed equipment (charge controllers, AC converters, etc.) by using advanced BMS
  • Green solutions (non-toxic chemistries, recyclable batteries)
Off-Grid chalet

Off-Grid Dwelling
solar water pump with battery

Solar pump with energy buffer battery

We offer flexible and modular solutions to meet all types of applications (voltage, capacity, sizing). The implementation of these batteries is simple and fast, with direct drop-in of legacy battery banks.

APPLICATION : PowerRack® system for Solar and Wind off-grid systems
500kWh Wind Off-Grid energy storage in Germany
500kWh Wind Off-Grid energy storage in Germany
PowerRack Modules in Serial assembly
PowerRack Modules in Serial assembly
PowerRack is a 100% modular, 19 inches Lithium-Ion battery system. BMSMatrix® embedded system : this technology embeds PowerRack intelligence providing an incredible modularity and scalability to the system: PowerRack can manage ESS as small as 2.5kWh-48V, but can easily scale up to some large ESS of more than 1MWh-1000V.
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APPLICATION : PowerBrick® lithium batteries for Wind and Solar Off-grid Applications
led solar street light with PowerBrick Battery
Led solar street light with PowerBrick Battery
Autonomous CCTV equipped with a powerbrick battery
Autonomous CCTV equipped with a powerbrick battery
PowerTech Systems offers a range of 12V, 24V and 48V Lithium-Ion battery pack to meet most of our customer needs.
The PowerBrick® battery offers a high level of safety and performance thanks to the use of new generation lithium iron phosphate cylindrical cells, managed by an integrated BMS system. PowerBrick® can be assembled in series (4S maximum) and parallel (up to 16P) to increase operating voltages and energy stored.

PowerBrick® batteries can be discharged up to 100% and have a operation life of 3000 charge/discharge cycles (at 100% DoD at 1C), 4500 cycles (at 80% DoD at 1C), even much more by reducing the depth of the cycles (See the cycle curve of the product sheets).
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Modular batteries for electric traction : PowerModule®
ESS Modular Systems : PowerRack®
Drop-In AGM Replacement : PowerBrick®