Batboard

hi..i have a charger which indicates battery fully charged (green LED lights up) but when use at site,the battery can only last for few minutes.there is also another charger behaving like this.The AC adaptor volt output is 18v. Any suggestions is appreciated.
Note : This charger can be used for GP300/350/88,P110

Does the battery charge properly in any charger? If not new battery time.
If so open the faulty chargers, clean out the spilled coffe and maybe it will keep working, Make sure the contacts are clean on the battery and the charger.

Any other possibilities? Guess the charger might be faulty (not really sure where the fault lies) but anyway thank u bruce for the info.

If the charger has the 18 volt transformer/wallwort it may be only a 16 hour charger. The slow/16 hour charger has a very small DC jack.

The rapid rate chargers use the 2.5mm center pin jack and run on 12 to 13.8 volts, the transformer is rated at 12 volts 900ma on the newer ones.

What is the number on the charger base?

How are you using the radio first off?

If you are but one of many, there may be others who are using the radio for short periods, then putting the radio back in the charger, and this will kill a battery in a very short time.

This is the 'cordless phone' dilemma as well, where the phone is used for short duration calls and then placed back in the charging cradle afterwards...BIG NO-NO!

From outward appearances, you have a dead battery due to misuse and improper charging habits.

I'll bet one or more internal cells are either leaky, or shorted, or just plain weak due to neglect(improper charging).

If you replace the battery, demand it gets charged ONLY when the radio no longer transmits, then ONLY charge it for the alloted time as stated by the battery manufacturer, this way you should get maximum life from your batteries.

Get a light timer and plug the charger into that so the maximum charge the battery will get is set by the timer and no more, plus you will not over charge the cells past their rated level which prevents heat buildup and shortens battery life.

try a known good battery, on the same radio, in the same cradle...that will rule out the battery issues.

18v 1amp is standard for the wall warts for the newer motorola rapid chargers..

Greetings, my first post on the Batboard although I've been a lurker for quite a while.

I recently had this exact same issue with 2 HT1250 NiMH batteries. In my case it was definitely time for new batteries. I replaced mine with the 2000mAh Li-Ion Impres battery packs. I forget the P/N off the top of my head but I LOVE them! They go way longer than the stock NiMH battery that came with each HT1250 did when new.

Rod Farva wrote:18v 1amp is standard for the wall warts for the newer motorola rapid chargers..

Ah, not for the GP300/P110/P1225 charger.. too much heat will burn up the charger. There is not enough heatsinking in them.