RS-800 Battery Wiring Question

[Anonymous user]

My RS-800 backup unit was clicking and failing the 'self-test' portion of startup, where the green light fails to come on and the yellow light flashes.

I removed the batteries to test the connections but got confused when re-attaching the wires to the positive and negative terminals.

Does the short yellow wire connect +/+ or +/-?  Does it matter which battery is on top?

I gave it a shot and caused some smoke... any help would be appreciated.

[BillP · Accepted solution]

Hi Dante,

Can you provide the exact Model and Serial number for the unit? This information

can be found on the small white bar code sticker.

Secret Squirrel

[Anonymous user]

BR800BLK

5B0740U14946

Thanks!

[BillP]

It sounds as if you've disassembled the 24vdc battery cartridge. The 12vdc batteries are connected in Series to increase their operating voltage to 24vdc. I would not recommend attempting to reconnect the wires if you are unsure of their placement. From the serial number I can determine that the unit was manufactured in 2007. The batteries will typically function in the unit for approximately 3-5yrs before requiring replacement. I would recommend replacing the battery at this point. The unit uses the RBC32 replacement battery cartridge.

Secret Squirrel

[Anonymous user]

That sounds about right.  I appreciate the feedback and will look into a replacement battery.