1S 2.0V 2.3V 2.4V 3.2V 3.7V 4.2V 4.3V Active Balancer Battery Equalizer For Lithium Polymer, LTO, 2.0V Lead Acid/Vrla Battery, LiFePO4 and Li-ion 18650 DIY Active Balancer(Energy Transfer/Dynamic) Buyer attention: You need to order no less than 2pcs. Otherwise it is useless. 1 Application The balancers can be used for various lithium ion batteries both cylindrical or prismatic batties: LIFEPO4 or LiPO,LIMN2O4,Lithium-ion Li-ion,LiPolymer battery pack etc. for different brands