Passive charging cables* does not come with batteries and is to be used in conjunction with a smart charger (not included)

(6 amp hour through 200 amp hour).

Designed to be used with 12v batteries in parallel.

Instead of buying multiple smart charger  get up to matching amp hour Passive Charge Cable. 

For example:

Using the 5-pair passive charger cable rig and a 100-200 amp hour smart charger*

You will be able to connect 5 of the same battery to charge all of them with one charger. 

Batteries: 12 volt 10 amp hour lithium x 5= 50 amp hour ( always compare to your smart charger amp hour max).