Sanyo Battery pack

Hi Need to replace a rechargeable battery pack from a 18 year old radio scanner( Black panther/challenger bj200).. the label on the batteries says sanyo but cant see any part number.. its a row of 5 AA size looking batteries sealed in plastic with a red and black wire exiting.. the charger is for 6V .anyone any ideas for a replacement?

Thankyou Daryn Lee

Reply to
Pompey ©
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The pack you have is either NiCad or NiMH, most probably NiCad. As the chargers (especially 18 years ago) were different (the charge cycle is different for the two types), you should try and replace the pack with the same chemistry.

Unfortunately, you won't find many NiCad packs around nowadays.

You may need to get a NiMH pack and a new charger (same voltage / cell as NiCad = 1.2V per cell nominal).

The batteries are clearly a series arrangement (1.2V x 5 = 6V), so a charger designed for 5 cell NiMH would work.

Good luck

Cheers

PeteS

Reply to
PeteS

charger

If it's 18 years old it will almost certainly contain NiCad Cells. These are being phased out in favour of NiMH cells but you can still get them. NiMH cells don't allways work well in chargers designed for NiCad cells.

Try asking Overlander to make you a new pack (or why not two). Their prices are usually reasonable.

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perhaps using these cells if you are sure yours are AA size
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They have a page on their website that illustrates their standard cell configurations. It's hard to find so here is the link for that..

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Take a look at configuration 10. Is you pack that shape?

To be 100% safe you should take your pack apart to see if it contains a thermal fuse or similar. If it does then you might want to remove it and replace it in the same location on the new pack. In that case perhaps ask Overlander not to shrink wrap the pack but to supply some heat shrink tube loose so you can wrap it yourself.

Colin snipped-for-privacy@pandoraBOX.be (remove BOX)

Reply to
CWatters

| The pack you have is either NiCad or NiMH, most probably NiCad.

Almost certainly NiCd.

| As the | chargers (especially 18 years ago) were different (the charge cycle is | different for the two types),

Only for fast chargers. For slow chargers, it's basically the same -- put X mA into the cells forever (as long as the charger is on, anyways.)

| you should try and replace the pack with the same chemistry.

Not bad advice. | Unfortunately, you won't find many NiCad packs around nowadays.

Sure you will. | You may need to get a NiMH pack and a new charger (same voltage / cell | as NiCad = 1.2V per cell nominal).

If it's a slow charger, it'll work. It'll just take a lot longer to do a full charge ... perhaps 3 to 4 times as long, because NiMH cells will have 3-4 times the capacity. | The batteries are clearly a series arrangement (1.2V x 5 = 6V), so a | charger designed for 5 cell NiMH would work.

In any event, it's relatively easy to make a new pack if you're good at soldering.

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includes some instructions.

You can find 4 packs of AA 900 mAh NiCd packs at Wal Mart or Home Depot for about $6 each. Or NiMH packs will probably work as well.

Or places like Batteries Plus can make you a new pack. You'll pay more, but probably less than you'd pay the original manufacturer for a new battery pack.

--
Doug McLaren, dougmc@frenzy.com
Schrodinger's cat may have died for your sins.
Reply to
Doug McLaren

At that age they'll be AA size NiCd cells "NiCad"s (1.2V each) , go to a battery specialist they'll be able to re-pack it, or buy cells with solder tabs and do it yourself.

Jasen

Reply to
Jasen Betts

You can similar pack at hobby stores - we use them to power the radios and servos in RC planes - note most planes use the 4.8 v packs, but 6v packs are also available

Alternatively, you could just buy 5 new cells with solder tags and make up a pack yourself

David

"Pompey ©" wrote:

Reply to
quietguy

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