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Nice - I have a question regarding 18650 battery alternative which is a 3xaaa adapter - can I put it in a normal aaa charger? Would it only take longer for accumulators to charge or can I also damage them?

I do not fully understand your question but if I am right u want to charge aaa batteries and this one will not work as it operates on higher voltage batteries but I have something that will do the job for you. I made a review of this unit

and I use it daily and it is capable of charging a very wide range of rechargeable batteries. Sorry for writing back after 6 months but I did not visit my steemit account ;) for a while.