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Thread ID: 63351 2005-11-06 05:12:00 How do u replace rechargeable batteries Speedy Gonzales (78) PC World Chat
Post ID Timestamp Content User
402370 2005-11-11 00:49:00 Cheers guys, now I can get mine fixed for a fraction of the cost of a new one. Sb0h (3744)
402371 2005-11-11 00:58:00 Cheers guys, now I can get mine fixed for a fraction of the cost of a new one.
Can we assume you have made inquirer's?
Cicero (40)
402372 2005-11-11 02:22:00 Not as yet, being show day and all. But I figured I was up for a new one, now it looks like I may be able to get it repaired after all. If the shop price is too expensive I might try GF's tip and cut the old batteries off, got nothing to lose I guess. Sb0h (3744)
402373 2005-11-11 03:35:00 Not as yet, being show day and all. But I figured I was up for a new one, now it looks like I may be able to get it repaired after all. If the shop price is too expensive I might try GF's tip and cut the old batteries off, got nothing to lose I guess.
Went to show yesterday,bought 3 of those torches that have a coil and magnet,you just shake, and torch works in proportion to amount of shaking,very nice too.
Cicero (40)
402374 2005-11-29 03:52:00 Hi,

I have an old Philishave 920 recharageable shaver. Recently I feel it has needed recharing more often.

How, it seems to be impossible to recharage it.

In addition, before I could power it directly off the mains if the batteries were disachaged, but now this does not work.

I am wondering if replacing the batteries will fix the problem or if the charging circuit/power supply is the problem.

The existing batteries in the shaver have the same diamter as AA cells and the same lenght as AAA cells, so I plan to try to solder AAA rechargeables in there.

I imagine that ordinary solder won't "stick" to the batteries very well, since the ends of the batteries aren;t copper -- any ideas about this? Also, how easy is it to fatally cook NiMH batteries?

Martin
http://kellerman.org
mkellerman (9210)
402375 2005-11-29 04:03:00 Welcome to PressF1.

The cells might be internally shorted. That shouldn't have harmed the charger ... it will be a constant current supply. Try clipping the cells out now they won't charge. If the shaver works on mains with them out, the charger is OK.

The cases will be nickel. :D It's a bit iffy to solder. The "proper" way is to spotweld them. It is fairly easy to cook the cells. :( I have soldered NiCds using phosphoric acid as a "helper" to the rosin flux.
Graham L (2)
402376 2005-11-29 20:15:00 I imagine that ordinary solder won't "stick" to the batteries very well, since the ends of the batteries aren;t copper -- any ideas about this? Also, how easy is it to fatally cook NiMH batteries?

As Graham says, it is Nickel, but I have never had any problem soldering Nickel. Just make sure everything is clean and grease-free, and be careful not to overheat the cells. After the soldering is cooled, wiggle and pull the connection to make sure it is good.
Strommer (42)
402377 2005-11-30 12:19:00 Thanks to Graham L and Steve L for their input.

I actually opened up the shaver and took out the batteries and it did not work when connected to the mains. I then used a battery charger to charge the batteries that came from the shaver and put them back in and the shaver can work from battery power.

The conclusion is the charger/power supply is not working, but the batteries are OK. I now have selotaped the batteries back into the shaver and am using the original springy contacts without soldering the batteries in and the shaver is working OK, but I don't really want to take the batteries out each time they need recharging :)

Any ideas on how to fix the power supply circuit? :)
mkellerman (9210)
402378 2005-11-30 17:32:00 Any ideas on how to fix the power supply circuit? :)

This is a job for the professionals:
http://www.shavershop.co.nz/

Other details about The Shaver Shop are posted above. They have an 0800 number and the repair and courier service is quick. Just do not talk to Linda (or whoever that woman's name is) - ask for the manager or the other guy (names probably on the web site).

Happy shaving...
Strommer (42)
402379 2005-12-01 09:02:00 There is a place called The Shaver Shop in Pitt St near Karangahape Rd if you need help. He changed my batteries easily and quickly. But to say the batteries should last the life of the shaver is a bit of a generalisation. Firstly, how long will the shaver last? I bought mine in 1984 and replaced the batteries in 1994. Those batteries are still fine. The trick in making them last is to dischage them COMPLETELY. Once the batteries are discharged to the state where you can no longer shave, take off the head and let it run until it stops. By doing that your batteries may not last the life of the shaver but will certainly last much longer than most. My shaver is 21 years old and is starting to show signs of wear and tear and I am only on the second set of batteries. As with all rechargeables (expensive Lithium excepted) you should disharge them completely if you want them to last. That includes portable phones. Why do people put them back on the charger after use? I always thought that the idea of a portable phone was for it to be portable - that is, with you when it rings. If you have to go to the charger to answer it then you have defeated the purpose of the portable phone, surely. If you allow it to discharge completely before recharging it will last SO much longer. Roscoe (6288)
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