Bought a dozen chargers to capacity test and process 18650's. I've had a lot of failures of the devices in the 3 weeks I've been running them despite running them gently. Protocol has been 300ma charge and discharge test for all cells with lots of ventilation in the coldest room of the house, clean air, no dust or pet dander. Instead of a dozen wall warts, I used loose barrel plugs and run everything off of a trustworthy 12v30a power supply and voided the warranty. -2 charges have had fan failures. I knew the fan was a problem from some forum posts so I wasn't surprised. Cheap bearings. -1 charger has a bay that will not switch out of Charge mode. I can't select any other option. I assume some bit of circuitry is fried. The remaining bays work fine. -1 charger has a bay that stops charging at 3.6v while still dumping the amps into the cell, resulting in the cell non-catastrophically failing. They got hot but never vented or burned. Killed 3 cells in a row that way. The remaining bays work fine. -1 charger consistently reads high capacity on discharge. Research said that some had miscalibrated bays but one entire device is off by 5-10% high So I'd guess you've got a three-in-five chance of getting a charger that will function flawlessly after 3 weeks of use. Another has a fan on it's way out. I'm down from processing 48 cells at a time to 38 cells at a time as of time of writing. Everything with Liion Wholesale went fine.

Nice charger. The refresh mode helped bring alive some Ni-Mh batteries I had laying around. After being abused for years in the wall wart chargers, it was nice to get real information on battery health. It is also nice to put Li-Po batteries in storage mode.

This charger has so far impressed me. From the day I received it it has not stopped day and night processing batteries for about one month so far. My only regret is not buying two of them, because doing four batteries at a time when you have 100+ to get through is long. It has revived batteries I thought were dead by using the Discharge refresh mode. Has useful features and you can do 4 batteries independently in different modes. Fan is not bothersome if you have it in a closed door room.

Product was shipped fast and arrived just as described.

Nice, full featured charger that's pretty hard to beat for 30 bucks. The fan on mine is intermittently noisy but it doesn't really bother me because getting a nicer charger will probably cost substantially more money.