Forum Thread

Hitachi drill, one battery will charge

discostu58 554 235 July 31, 2011 at 03:24 PM
Just bought a floor model Hitachi 18V Lithion Ion drill. It came with two batteries, one will charge the other will not. I have swapped out the battery for another one, but that doesnt charge either. The charger's light blinks red with the non-charging battery.
When I charge the good battery, the light is solid red, the charger clicks then stays solid. The bad batteries, the charger starts solid, clicks then clicks again (like the fuse is tripped) then it just blinks.

Should I try switching out the charger this time?

I dont want to return the whole thing because I got a really good deal ($70 then lowest internet price).

6 Comments

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#2
What do you mean by "swapped out the battery"? Did you buy a new one separately to try?

Also, how is your charger normally supposed to operate? I have a couple cordless drills lying around that slowly blink red when charging, rapidly blink red if something is wrong, and go solid red when they're fully charged.
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#3
Red light blinks at about 1 second intervals when fully charged...

http://www.hitachipowertools.com/...OM_new.pdf



List of models at link below. Owner's manuals also on the site.

http://www.hitachipowertools.com/...s.aspx?d=2
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#4
I went back to lowes and swapped the non-charging battery with another one at the store, but same results. Maybe its the charger? But the one battery charges that is why its weird, unless I just got two bad batteries when I swapped.

The charger blinks like its fully charged but its dead.
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#5
How old are those batteries, and was the replacement also from a floor model? I wouldn't expect floor model batteries to have received good care.

Can you measure the voltage of those batteries? I'd expect the bad one to measure 15V or less (each bad cell -> 3V drop, and one bad cell means the battery is ruined).
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#6
Quote from larrymoencurly View Post :
How old are those batteries, and was the replacement also from a floor model? I wouldn't expect floor model batteries to have received good care.

Can you measure the voltage of those batteries? I'd expect the bad one to measure 15V or less (each bad cell -> 3V drop, and one bad cell means the battery is ruined).
not sure how old they were, but as floor models, they should not have been used. The replacement was a floor model.

I dont have a voltage meter so I cannot test the batteries.
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#7
Quote from discostu58 View Post :
not sure how old they were, but as floor models, they should not have been used. The replacement was a floor model.

I dont have a voltage meter so I cannot test the batteries.
A digital voltage meter is a great diagnostic tool, and even the $3 ones from Harbor Freight are highly accurate. Some magazines have HF ads with a coupon offering them for free with any purchase (in other magazines, the ad requires a minimum purchase of $9.95 or $19.95). Lowe's should have measured the batteries anyway

Floor model cameras usually have run-down batteries, and I have a feeling floor model cordless tools don't fare better.
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