Wer zufällig gerade sowas gebrauchen könnte ;-) kann sich ja mal nach Preisen und Lieferbarkeit erkundigen...Modular Energy Devices Inc. manufactures and sells large Li-ion batteries having voltages of 11 to 400 V and capacities ranging from 50 to 1000 Ampere-hours. The company uses a proprietary electronic technology (patent pending ) called the Massively Parallel Modular Architecture to build large batteries from small commercial Li-ion cells. The unique electronic circuitry reliably balances the capacities of the parallel/series-connected cells and enables the battery to achieve the same cycle life as the individual cells. The unavailability of this capability led past battery developers to use large cells as building blocks which made large Li-ion batteries highly costly and potentially unsafe. Both of these issues are overcome in the ModEnergy™ products. A standard Modenergy ™ product is the 14.8 Volt/76 Ampere-hour ModPack™ module.