Lithium iron phosphate battery is a type of rechargeable lithium-ion battery. There are many capacities, 40mAh, 60mAh, 80mAh and 120mAh.Advantages: 1. Security: short current and over charged will not lead to explode or fire2. Maintain free: no need to add anything into the battery during the whole life time of the battery.3. Good performance with competitive price: compare with Ni-MH or Ni-Cd battery.4. Long cycle life: over 400 timesPacking: box/carton producing area:China payment:T/T in advance or L/C at sight