Reikirc 6pcs 3.7V 500mAh battery and 1to6 charger for A15W Udi U45 U42 U42W U42WH CW4 rc quadcopter drone spare parts

Bought these batteries for a school project that I needed batteries different than the normal Duracell. They worked well because they provide enough power but at a small profile that fit for my project. The only annoying thing was that I had to cut and re-solder a new connection method so that I could charge it and also plug it into my project, because the female and male connection pieces were foreign to me.

We purchased 5 Cheerwing drones to teach 22 grade schoolers how to safely operate hobby drones. There were two groups of 11 kids, and 4 days of 1 hour classes for each group. We had 16 batteries and wanted to charge as many as possible at once to be ready. The Reikirc charger is able to charge 6 batteries at a time but it takes all night to get the job done. The connections were poor and when all 6 batteries were connected much tinkering wigglinng the wires was needed to get the indicator lights to come on. Then some stuck in the charger and were hard to disconnect. After an all night charge some batteries were only half charged and reduced flight time for the kids. All the batteries were numbered so we could tell what batteries were charged and whitch were spent, this process helped determine that the batteries were fine, it was the poor charger connections that affected their weak charge. We gave away the drones at the end of the class along with all the batteries and one lucky (unlucky) kid got stuck with the multi charger. It helped with what we needed for a few days and the bonus is the 6 batteries that came with it, that made the purchase totally worth while. Good short term solution for charging, great solution for extra batteries.

Built very cheaply, can't hardly connect the batteries to charge them, also it doesn't charge them anyway. Had them plugged in to charge for 5 days and batteries still weren't charged. Don't waste your money.

This product now works perfectly. I had a problem with the charger unit, so I got in touch with the seller thru Amazon and yesterday received a replacement charger which functions fine. It is great to be able to charge 6 batteries at one time. Great price for that set up.

# of the 6 batteries have already started to "bulge" after only 3 - 4 charges and, do not seem to have the power/time of use that I expected. I Do not have equipment to actually test the charger or the batteries but, will update if I find a problem. However, from what I have been told, batteries like these should not bulge and have soft spots.

Love the way you can charge more than one battery at a time and works like a charm would buy again if needed to

Nice batteries. The charger is great. it's fantastic to be able to charge 6 at a time and to constantly have a back up ready. It arrived in great condition and we'll packaged.

The batteries only last a minute, very disappointed.