Compatible with COAST Polysteel 600(R) and 650(R) flashlights, the ZX700 Zithion-X Rechargeable Battery features a built-in micro-USB port for easy charging either inside or outside the light. A battery charge indicator flashes red during charge-up and shines solid green when fully charged. The overcharge/discharge protection circuits make powering up simple and safe.
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I bought 2 batteries because I had a good flashlight But since l received the batteries my flashlight will not work unless you bump it on the ground then it only comes on for a second does same thing with both batteries but worked great with other battery before I broke charging port
I already had a Coast Polysteel flashlight and found some at Ollie's for an incredible $10 each, so I bought 3. Then I found your great deal on the Li-Ion rechargeable packs for them and bought one for each of the Polysteel lights, so now they are dual-power capable. These lights are about the size of an old-fashioned D cell light, but a little smaller and lighter. They are very tough and reliable lights that zoom and maintain a circular beam even when zoomed in to a spot. A fantastic flashlight to keep for when you need it and can depend on it. I recommend when you are not using the Li-Ion rechargeable pack, put Li-Ion primary (non-rechargeable) batteries in the AA carrier so as to avoid leaks and extend the longevity of your non-rechargeable batteries. Li-Ion primaries are not known to leak like Alkalines do. I have ruined several devices with Alkaline batteries. Yes, Li-Ion costs more, but so does your valuable gear.