pulled the battery and threw it on the charger. it wouldn't go on the li-ion setting as it doesn't have a balance port. So I threw it on Pb as I have done with other batteries. it asks how many cells and voltage you want to charge to. I know batteries don't charge @12v so I chose the next 14.4. @.6a
I come back to check on it and it says it's at 16.5 Volts. I shut the charger off and put it on the meter still 16.5V, the bottom of the case is curved out so it rocks now. a few hours later it read 13.5v . I thought there was extra room in these cases since the cells were smaller than acid. This battery has always been trouble in the cold I already used a gift card for a new one but wanted to keep it out of freezing temps. I guess I could run it by jumper cables for a few minutes to see if it is even worth mounting.
Actually I just remembered my other old 1of 4 bad cell lithium is hacked into my UPS. I could swap it out and see how it handles there. A lithium powered weight UPS is pretty amusing.