Update 1 Slot Universal Intelligent USB Battery Charger for Li-ion SIMILKY / 18650 18490 18350 17670 17500 16340(RCR123) 14500 Rechargeable Batteries

first class

I'm unable to agree with all the rave reviews for this, although I can see it has a single good point. That being that it's a compact and semi-convenient way of charging batteries whilst on the move. Just as long as you have access to a USB point or a (quality) USB plug for mains and you're in no hurry to get each battery charged. Singular because you can only charge a single battery at a time, obviously.I've found that the main negatives are very slow charging and an insanely poor quality, thin USB lead (for which I would question the suitability for delivering power for charging lithium batteries). My 2500mAh 18650's each take an average of nearly 8 hours to charge in this! An added negative is a poor charger display which is literally three little led strips which suddenly change from red to green when fully charged. You have no idea of charge progression other than this. And you have to take the sellers word for it that this tiny plastic charger does indeed contain things like over-charging chips and basic safety features.The build quality is light and flimsy. I haven't been able to trust it enough to ever leave it charging unattended.My nitecore intellicharger stopped working after several years of loyal and constant use. I bought this as a stop-gap whilst deciding what model I would replace it with. Personally I think it's very poor value for money when compared to the cheapest nitecore chargers and I regret my purchase choice with this. I don't have the confidence that it's got good build quality and safety. It's at the cheap end of battery chargers but an extra fiver spent on something from a trusted name would be a better option.

The product is small enough to keep in your pocket to travel with and does the job it's meant to do. Take a while to charge devices but I've left it on overnight a few times now and that's the easiest way for me to do it without issues. Only downside is that the green/red light is a bit temperamental and the instructions for how to use could be better.

The media could not be loaded.  Simple but effective. I had other chargers but was missing this one and I love how compact it is and uses a standard micro USB to charge.Does the job with no issues

Might sound lie a 'no sh*t, Sherlock' message. But there is nothing on the box to tell you this indicates it will change to green when the battery is fully charged, even though that was my expectation. I put a BRC18650 in to charge (almost flat - dim light from torch) and left it for several hours. The red LED stayed red - cant' remember how many hours but a long time. I began to worry about potentially overcharging. I have several other battery chargers for AA & AAA batteries, that seem to charge multiple batteries quicker. But.... This morning after leaving it on charge overnight the lights this turned green. Finally! No idea if this is a battery issue or the charger's speed. But to reassure anyone - give it time and the indicator will turn green! I only have one device using this size battery so unlikely to use it again for some time, to compare performances. Other than that, it's a compact device, light - seems well made. And cheap. What's not to like?

I have just one torch that has a 18650 battery, so didn't need anything more than this simple device. Connected it to my desktop USB first - light was still red after 2.5 hrs - then switched to mains USB plug and it instantly showed green; strange but true.

it was delivered on time, and does what it is supposed to do.

Bought to charge a battery for my torch. Cheap enought. Need to make sure it's charging as it's abit dainty if you've big Bear hands. But very good product for what it is. Been using it for 6 months now and seems durable enough. Even able to plug it in in the car as it's usb plugged. Very handy.