MiFi Battery (3.7V 1500mAh 5.60Wh)

Specific Energy: 100-250 Wh/kg--Energy Density: 250-360 Wh/L Current: 1530 mAh-----Capacity: 5.66 ----Wh-Voltage: 3.7 V Charge/Discharge Efficiency: 80-90%--Specific Power: ~250 - ~340 W/kg Much lighter than other energy-equivalent secondary batteries Self-discharge rate of approximately 5-10% per month, compared to over 30% per month in common nickel metal hydride batteries, approximately 1.25% per month for Low Self-Discharge NiMH batteries and 10% per month in nickel-cadmium batteries. According to one manufacturer, lithium-ion cells (and, accordingly, dumb lithium-ion batteries) do not have any self-discharge in the usual meaning of this word. On the other hand, smart lithium-ion batteries do self-discharge, due to the drain of the built-in voltage monitoring circuit.