Hello, we can offer this battery charger for free but could you leave us a real review on amazon? if yes, please buy it with the 99% discount. there are only 10 discount code in total. these code can be usde only once and the valide time is 10Am 16th April—-26th April. if the code you used is invalide, please select another one, because it maybe used by some people
here is the charger listing, please click https://www.amazon.com/Greenergia-eletric-Battery-Charger-Microphone/dp/B07GVHRKJG/ref=sr_1_3?keywords=Lithium+Battery+Charger+36V%2F48V&qid=1555407230&s=gateway&sr=8-3
it is very important,please give us a review on amazon. we trust you.