Hellbore
Enlightened
I have a Husky 4W 2D tactical flashlight. I was using it to do some electrical work today. I was using some batteries I just purchased recently. I started to notice that whenever I bumped the light the beam would get dimmer momentarily, then sort of slowly come back to full brightness.
I thought this was strange and wondered if I was having contact issues. I started smacking the light around and it got dimmer and dimmer the more I hit it. After I hit it a bunch of times, it stopped regaining its brightness and stayed very dim like the batteries were dead.
I checked all the contacts and they were fine, so I took out the batteries (a matched pair purchased at the same time). Both batteries read 1.4 Volts. However, the flashlight was only drawing 100 mA at the tailcap!
When I replaced one of the batteries with a different, similarly low battery (1.35 Volts), then the light worked fine again! Now it was drawing 2 Amps at the tailcap.
I tried swapping in the other battery with the different battery, and now it was back to only drawing 100 mA. I narrowed it down to 1 battery that for some reason, won't allow the light to draw more than 100 mA. Strange thing is, both the bad battery and its mate were reading the same voltage, and were purchased at the same time.
Any ideas? Anyone ever seen this before?
Also, with the "bad" battery removed, the light no longer dims at all when I smack it around or shake it.
Crazy huh? A battery that was sensitive to shock and got ruined by it? Whaaa?
I thought this was strange and wondered if I was having contact issues. I started smacking the light around and it got dimmer and dimmer the more I hit it. After I hit it a bunch of times, it stopped regaining its brightness and stayed very dim like the batteries were dead.
I checked all the contacts and they were fine, so I took out the batteries (a matched pair purchased at the same time). Both batteries read 1.4 Volts. However, the flashlight was only drawing 100 mA at the tailcap!
When I replaced one of the batteries with a different, similarly low battery (1.35 Volts), then the light worked fine again! Now it was drawing 2 Amps at the tailcap.
I tried swapping in the other battery with the different battery, and now it was back to only drawing 100 mA. I narrowed it down to 1 battery that for some reason, won't allow the light to draw more than 100 mA. Strange thing is, both the bad battery and its mate were reading the same voltage, and were purchased at the same time.
Any ideas? Anyone ever seen this before?
Also, with the "bad" battery removed, the light no longer dims at all when I smack it around or shake it.
Crazy huh? A battery that was sensitive to shock and got ruined by it? Whaaa?
