With 4 independent output,3 cooling fan you can charger 4 battery packs at the same time no mattery what battery type you have

 Quattro B6 Multi chargers / professional balance chargers/dischargers

Operating Voltage Range	DC 11-15 Volt
Power Source	12V DC (car battery)/AC mains PSU(>2000Watts)(recommend PSU eFUEL PSU-30A)
Charge power	50watts,current is regulated accordingly  e.g. 11.1 v battery,charge current approx. 4.5A e.g. 22.2v battery,charger current approx. 2.2A
Discharger power	5watts,current is regulated accordingly
cell Count	1-15NiCD/NiMH cells
	1-6 Lipo/Lilon/LiFe cells 1-10 Lead-Acid cells(2V-20V)
Current Drain for balancing Lithium	300mA
Charge Termination NiCd/NiMH Lead-Acid and Lithium	Automatic,negative Delta Peak method Automatic,voltage-dependant,CC-CV process
Dimensions	225.4*158.6*62.4mm
Net weight	1.09kg

the set contains:

1.iMAX Quattro B6

2.Plu-in battery clamps

3.balance socket

4. Crocodile clip charging cable

5.Tamiya charging cable

6.18awg wire charging cable

7.Futaba rx charging cable

8.JST/BEC charging cable

4 independent output!!

Three Cooling fan---good cooling system

All the connector cable 

Multi Qurttro 4B6 chargers