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Author Topic: Yaesu FNB-4A 12V Battery Pak  (Read 1238 times)
KG6Q
Member

Posts: 47




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« on: September 26, 2011, 04:53:53 PM »

I'm looking to rebuild a Yaesu FNB-4A battery pak. To do this, I need a schematic or a wiring diagram. A simple explanation of some inside wires would also do.

Inside this battery pak, there are 5 wires that I believe connect to the NiCd cells. Some wires have been previously cut so I'm not sure where they connect to. One of the 4 fast charger pin contacts appears to have no connection. Here's what I know and do not know.

White: cell temperature sensor
Black (short): negative battery pak contact strip
Red: positive battery pak contact strip
Blue: Huh?
Black (long): Huh?

Can anyone please shed some light on these connections? I have searched high and low for a schematic or wiring diagram for this battery pak, but have found nothing.
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KG6Q
Member

Posts: 47




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« Reply #1 on: October 01, 2011, 01:39:21 PM »

I have acquired a schematic for Yaesu's FNB-4 battery pak which will permit me to do a good rebuild.

If anyone would like a copy of the schematic, please let me know.
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