- Ultra-Compact Lights (Car Key Size)
- Compact Lights (Whiteboard Marker Size)
- Large Lights (Soda / Spray Can Sized)
- Bike Lights (5)
- Headlamps (16)
- AA Battery Lights (5)
- Ultra-Violet Lights (UV) (7)
- Police & Emergency Response (29)
- Headwear (2)
- Bags & Pouches (9)
- Holsters & Lanyards (8)
- Hawke Sport Optics (5)
Great practical product, I start using rechargeable batteries for night light, bicycle lights etc or simply use on products around the house. The charging by the Charger is fast and the LED indication is clear to see.
Bought this to replace my current Nitecore Intellicharger i4 years back, although some slot of the spring become very still but still can use to charge those 18650 batteries. And this new USM4 is a good improvement to charge all types of batteries fast with OLED display that tells you how much volt and current is using and even can revive dead battery. Best part is it will indicate fast charge or normal depend on your power source. Highly recommended!
Really charge real fast as compared to my other batteries charger.
Received it quite fast thats an A+ for me .
Tested it out on the QC3 Anker USB charger really love the displayed info on all the different batteries .
Don't regret buying the UMS4 at all. 😻
Clear display on battery status. Allows for configuration if charging different types of batteries. Would recommend since all flashlights run better on respective suggested rechargeable batteries to optimize performance.
One stop and only device u need for all your rechargeable batteries.
Beyond my expectations
I found that the readings of battery internal resistance is not consistent
Using 2 units of this to replace my previous chargers. Good informatiom displayed, especially on the internal resistance value, which help to grade the cells accordingly. Do wish that it remembers the charging current set as I normally will not want to fast charge all the time.