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Things I liked: Charges really fast. No guessing to when battery is charged. No overcharging.
Things I would have changed: Wishy washy directions. There's a probe that needs to be taped to battery casing when charging. I had to call Tenergy customer service to figure out how. Also, rthe difference between setting one and two is confusing.
What others should know: Buy a smart charger.... will increase the life of your battery... no guessing when charge is up, and charges much faster.
Things I liked: the fact that it stops charging when needed, no need to watch the battery
Things I would have changed: nothing what could you?
What others should know: just buy it it will help you out in the long run