What charger goes with it? I bought one but dont know what charger to get.

you need to get a Lipo RC charger capable of handling 4 cells. Make sure it's a balance charger with Deans connectors to match your battery

Would this be suitable for an rc helicopter also? thanks

Yes it would, but it depends on the helicopter. This would be appropriate for most 500 - 700 size rc helicopter made for 6S(22v), but not for smaller size helicopters. You need to check with the helicopter manufacturer to see what your helicopter requires.

Brand	HRB
Manufacturer	hrb
Model Name	HRB 4S
Product Dimensions	13.49 x 4.19 x 3.4 cm; 408.23 g
Compatible Devices	Automobile, Drone
Voltage	14.8 Volts
Power Source	battery powered
Batteries Included	No
Batteries Required	No
Battery cell composition	Lithium Polymer
Battery Power Rating	4400 Milliamp Hours
Material	aluminium
Manufacturer	hrb
Country of Origin	USA
Item Weight	408 g

HRB 4S Lipo Battery 14.8V 4200mAh 60C Lipo Battery Compatible with RC Car RC Plane RC Truck RC Boat

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