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Philips210 · 26th Jan 2023, 4:02 pm

Hello,

I've had quite a few problems with those 2.4V NiCad batteries in Philips sets and agree about the leakage. It seems to corrode the copper print foil under the solder mask. One CP110 chassis was badly affected and should really have been a write-off but I managed to carefully repair the print with TCW wire links. It was quite a difficult repair as the corrosion was awkward to deal with. At one time you could obtain NiMH replacements which seemed to be OK.

Some remote control Thorn sets using the TX10 chassis used those Varta stacked cells and they could also corrode the print foil.

I'm not sure I'd be brave enough to try lithium cells. I would want to be sure the cells could never become stressed. Maybe a couple of small NiMH cells with solder tags connected in series and a suitable mounting/plate with jumper wires to where the existing battery is fitted. There's not much room on the CP90/110 chassis to make things easy though.

Regards,
Symon

26th Jan 2023, 4:02 pm	#3
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,579	Re: Philips CP90 and others: memory bettery Hello, I've had quite a few problems with those 2.4V NiCad batteries in Philips sets and agree about the leakage. It seems to corrode the copper print foil under the solder mask. One CP110 chassis was badly affected and should really have been a write-off but I managed to carefully repair the print with TCW wire links. It was quite a difficult repair as the corrosion was awkward to deal with. At one time you could obtain NiMH replacements which seemed to be OK. Some remote control Thorn sets using the TX10 chassis used those Varta stacked cells and they could also corrode the print foil. I'm not sure I'd be brave enough to try lithium cells. I would want to be sure the cells could never become stressed. Maybe a couple of small NiMH cells with solder tags connected in series and a suitable mounting/plate with jumper wires to where the existing battery is fitted. There's not much room on the CP90/110 chassis to make things easy though. Regards, Symon