Battery only no box Safer, simpler and more intuitive hobby battery charging when paired with any compatible Spektum Smart Charger Save time and hassle, while improving battery life Integrated microchip stores unique parameters for each battery Smart discharge allows batteries to automatically discharge to a safe voltage No soldering required, equipped with IC3 and IC5 connectors, and compatible with EC3 and EC5
These batteries are safer than other lightpos for various reasons you can do your own research and point in the future with no balance lead but data transport in the middle of the charge plug.
Aspecial charger is required. I love the technology