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Old 08-16-2007, 11:29 PM   #16
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Dead Batteries on power tools


Your better off buying a new battery. Rebuilds just aren't the same. If they were you could buy them re-built from the factory and they don't do that as far as I know.

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Old 09-10-2007, 11:45 AM   #17
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Dead Batteries on power tools


A word about dry cell rechargeable batteries.

The old NiCd batteries had many problems, one of which was 'memory'. The new generation NiCd batteries do not have this problem.

Lithium Ion batteries are by far superior to most other dry cell batteries.

In any case, you should try to use a battery until it's flat, at which point it should then be recharged.

If the battery will not be used for a long period of time, it can be placed in a waterproof container/wrapping & placed in the refrigerator...NOT the freezer. Doing so will reduce the amount of 'local action' within the battery, thus preserving its life.

Heat kills batteries. Cold will slow down the chemical reaction (& reduce the discharge capacity).
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Old 09-10-2007, 02:19 PM   #18
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Dead Batteries on power tools


gee... store them in fridge .... do we need to give'em some massarch every 3 month... sing them a song once a while... enough headache to locate, recharge the 2000 pieces of them...
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Old 09-10-2007, 02:28 PM   #19
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Dead Batteries on power tools


Quote:
Originally Posted by KUI****G View Post
gee... store them in fridge .... do we need to give'em some massarch every 3 month... sing them a song once a while... enough headache to locate, recharge the 2000 pieces of them...
You could also send them on a nice overseas holiday if you think it would help an overworked, undercharged battery.

In the meantime, I said:

"If the battery will not be used for a long period of time, it can be placed in a waterproof container/wrapping & placed in the refrigerator..."

BTW, it is a proven fact that holidays & massages recharge batteries. Isn't your battery recharged after a nice massage & a nice holiday?
So, if you are going on an overseas holiday for 6 months & you wish to leave your poor battery at home, do the above. There is no need to refrigerate it every time you have finished using it.

Aren't your batteries recharged after a relaxing massage & a nice holiday?

Last edited by elkangorito; 09-10-2007 at 02:36 PM.
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Old 10-13-2007, 10:22 PM   #20
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Dead Batteries on power tools


I try this formula and works
Battery Revival:

The batteries are often a problem. If you have any NiCd or NiMH batteries that won't hold their charge, you can often revive them. This is not a new concept, but here is my recipe for reviving rechargeable batteries:
  1. Discharge the battery as much as you can.
  2. Place in a sealed plastic bag.
  3. Place the bag in your freezer for at least 24hours. Overnight is sometimes enough, but I leave it about a week.
  4. Take the bag out of the freezer and leave the battery to return to room temperature. Make sure you wipe off any condensation from the battery contacts before you use it. I just leave them in the sun for a few hours.
  5. Fully charge the battery, then run it down again, as low as you can get it. Repeat this charge-discharge cycle a few times, and see if you get a longer life.
Your mileage will vary, but two of my 5-year-old batteries are now useful. I get between 2 and 4 hours from one of them. You can do this with cellphone batteries, or batteries from lots of other gear.
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Old 10-15-2007, 09:55 AM   #21
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Dead Batteries on power tools


does that implies storing normal working batteries under freeze temperature is also a good idea... if this is the case... it save me a lot of headache of relocating all the batteries I had between summer/winter... I thought room temperature storage is the optimal env.... but does it ?
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Old 10-23-2007, 01:05 PM   #22
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Dead Batteries on power tools


I have had great troubles when it comes to batteries on my drill !
In the course of conversation a fellow told me never charge a battery over night if you have a three hour re charge time then only recharge per instructions. He claimed that once a battery fully charges the continuation will start with drawing it's charge back out thus you will end up with a weak battery.
I have yet to try this. But I wanted to mention it for what ever it is worth.

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Old 10-23-2007, 02:22 PM   #23
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Dead Batteries on power tools


Don't most chargers these days do quick charge until the charging is done and then go to a trickle charge to keep batteries topped off?
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Old 10-23-2007, 03:33 PM   #24
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Dead Batteries on power tools


Yes they do
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Old 10-24-2007, 12:55 AM   #25
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Dead Batteries on power tools


You never want to run NIcd batteries down to nothing. They have a lose memory. When they lose their nominal charge so many times they have a hard time regaining it. Same goes for Nmh (but not as extreme).

Once you notice a loss in power, throw the battery on the charger.

To run them to nothing is a common misconception. When people run their batteries down (over time) past the voltage which the charger uses to recognize that there is a battery loaded they have a problem. Battery error blinking light on the charger.

An example.
My boss has a lot of Dewalt cordless tools, inlcuding the radio. He has burnt up 3 18v batteries alone this year running them to down to nothing in that radio.

Another thing-never let you batteries over charge.

For more info go here (long read) http://www.dansdata.com/gz011.htm
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Old 11-07-2007, 12:11 AM   #26
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Dead Batteries on power tools


Quote:
Originally Posted by skymaster View Post
Min: OK thanks however it would be too ez if it did work eh?
I send mine out to a rebild shop, fairly inexpensive and they upgrade em.
JackM
How are those rebuilds. I have a bunch of battery's that I want to send out to get rebuilt, I'm just a little leary about it. Do they last like new?

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