Used Batteries

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twillingham
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Used Batteries

#1 Post by twillingham »

I have heard people on this forum indicating that they renew old batteries. I have two original panasonic batteries for a cf-28 and cf-29 that i have replaced. If anybody would like these batteries let me know THanks
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Toughbook
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Re: Used Batteries

#2 Post by Toughbook »

How did you reprogram the chip inside? That is what tells the batteries how old they are and how much charge to take. I have rebuilt several CF-28 batteries to no avail... You must be able to reprogram them or the new batteries are wasted. The only way that I know around this would be to replace the batteries when the battery pack is new and replace with a higher capacity battery.
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twillingham
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Re: Used Batteries

#3 Post by twillingham »

I am not saying that I did any work on the old batteries I am simply saying I replaced two batteries with new ones. I have two old batteries for anyone who wants to take a shot at getting back up to speed.
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Azrial
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Re: Used Batteries

#4 Post by Azrial »

Toughbook wrote:How did you reprogram the chip inside? That is what tells the batteries how old they are and how much charge to take. I have rebuilt several CF-28 batteries to no avail... You must be able to reprogram them or the new batteries are wasted. The only way that I know around this would be to replace the batteries when the battery pack is new and replace with a higher capacity battery.
I am not doubting you but that certainly is a novel thing for a battery to have. Why would they have to program obsolescence into the battery? I mean isn't this reduction the the ability to hold a charge is a natural byproduct of a battery aging?

I ask because I really want to know.
Last edited by Azrial on Thu Dec 03, 2009 9:59 am, edited 1 time in total.
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nine
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Re: Used Batteries

#5 Post by nine »

I noticed an interesting thing earlier this week when I refreshed the battery in a CF-29 I got. It actually ended up reporting a HIGHER fully charged capacity after refresh. I know this is different behavior than the CF-28's, which would only lower the capacity. This got me wondering if the CF-29 batteries might be rebuildable?
anyone tried it? I don't have any 29 batteries that are dead enough for me to tear in to, or I'd consider doing it myself

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twillingham
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Re: Used Batteries

#6 Post by twillingham »

i have an old cf29 battery and 28
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