Super Duper Noob Cave PCB Questions

[maxmultiplier]

Hello Everyone,

I need a little advice. I recently purchased a couple of Cave PCB's which contain lithium batteries. I have no way of knowing how old they are. I'm worried that they will eventually leak acid & permanently damage my newly acquired boards.

My question is when & how often should I replace the battery on this type of PCB to ensure proper care?

What if I were to just permanently remove the battery? Would the PCB still operate normally? What features would I lose if no battery is present?

The PCB's are Mushihimesama & Mushi Futari 1.5


Thanks in advance.

[trap15]

As far as I know, coin batteries like that don't often leak. If you remove the battery, the RTC stops working (only matters for Ibara I believe), and I think scores are lost after power down. Aside from that they should work fine. As far as replacement, I don't think you really have to replace them for quite a long time. They're designed to last extremely long.

[PC Engine Fan X!]

On the average of lasting upwards of five to six years tops with the back-up batteries used on the Cave SH-3 PCBs that use them (in terms of longevity). I had an Cave SH-3 powered Mushihimetama PCB whose back-up battery went kaput...replaced it and it was good as new.

Protip: Place a sticker label with the current date if and when the SH-3 back-up battery is replaced for peace of mind and posterity. Easy as pie.

PC Engine Fan X! ^_~

[AntiFritz]

For future reference, the only cave pcb that really matters battery wise (afaik) is daioujou black label. Removing the battery while the boards powered down will ruin it permanently.