BT U3 Battery Tester

Test your battery The JJC BT U3 Battery Tester is compatible with 1.5 V, 3 V and 3.7 V batteries. Whether it's remote controls for household use, children's toys, flashlights or portable electronic devices, this tester allows you to easily check the battery level at any time.  Highlights Easily check the battery level at any time Supports 1.5 V, 3 V and 3.7 V batteries Magnetic design Quick and clear information with the indicator lights Easy to use Align the red positive pole and the black negative pole with the corresponding poles of the battery, then slide the voltage button to the correct position. The tester has 3 indicator lights for the battery level, which provide quick and clear information about the status of the battery.  Magnetic design Both ends have a magnetic design, allowing the tester to be easily attached to the battery terminals. This design also saves space and makes storage easier.  Durable construction The housing is made of high quality ABS material, which ensures durability. Its compact size makes it easy to carry, fits effortlessly in pockets or backpacks, and can also be attached to a key ring for added convenience. Please note: to ensure correct use of the tester, do not stack two or more batteries on top of each other for testing. Also, make sure that the voltage of the test battery does not exceed 5.5 V., Supports 1.5 V, 3 V and 3.7 V batteries for various devices Easy to use 3 indicator lights provide quick feedback on the battery level Both ends are equipped with magnets for easy attachment  The housing is made of high quality ABS material The compact design fits in pockets or backpacks 2 year warranty