KSC-17 with TK-250 question

[AD0JA]

Recently, I acquired a couple TK-250 radios with the KSC-17 normal-rate chargers.

I put them on the chargers today, but was wondering, when the TK250s are finished charging, does the red light turn off on the charger? Or, should they only be left on the charger for a certain amount of hours?

The instruction manual that I found online says almost nothing about charging them

 

[ramal121]

KSC-17 is a standard rate charger. The red LED will be on as long as a battery is in the pocket and never go out. Usually 8 to 10 hours for a depleted battery ought to do it. If you go over that time a little, no harm. But don't leave the battery in the charger for days or weeks on end, you'll cook the thing to death.

 

[AD0JA]

OK, thanks.

That's what I though but wasn't sure. The HT batteries were completely dead (had been sitting in a box for who knows how many years). Left them on the charger for about 13 hours and they work just fine.