Batboard

I just bought a sys saber from here and a charger from ebay. i put the battery in and the charger cycles thru the lights and then sits on the yellow light.

it's a factory battery ntn4595c.

any ideas?

after rapidly removing and replacing the battery it started charging. we will see what happens

Sounds like a borked thermistor in the battery itself, if the charger charges other batteries normally. I had a Multiplier Saber battery do that once that needed a few minutes in the freezer before it would charge.