Minelab Sov Gt/elite battery charging indicating light

[urge38]

Hi Guys

I have two sets of genuine Minelab sov Gt batteries, both do take charge, and hold it well, ONLY on one set, the green light does not dim, I know I can just leave it, but I would rather fix it if possible.

Is there a common fault with this dimming light issue plz ??

[kt315]

hi
check a voltage of both batts. they have to be 13V after charge. 10x1.3V.