D
Daniel Who Wants to Know
I recently aquired my aunt's Invacare wheelchair that she got many years ago
and used for a few months before abandoning it in her garage and allowing
the batteries to go completely dead. I am hopeful that they will recover as
they seem to be charging well so far. They are currently charging in
parallel at 13.7 volts and falling as the internal resistance drops with a
charge current of about 6 amps (3 each). They started with OCVs of 1.4 and
..5 respectively. The batteries are MK M22NF SLD G (gel cell) dated January
1999. Other than the obvious rule of not exceeding 14.1V what can I do to
help them recover? I understand that MK gel batteries are very good quality
(and a very high price to match) so I am hopeful that they may survive.
and used for a few months before abandoning it in her garage and allowing
the batteries to go completely dead. I am hopeful that they will recover as
they seem to be charging well so far. They are currently charging in
parallel at 13.7 volts and falling as the internal resistance drops with a
charge current of about 6 amps (3 each). They started with OCVs of 1.4 and
..5 respectively. The batteries are MK M22NF SLD G (gel cell) dated January
1999. Other than the obvious rule of not exceeding 14.1V what can I do to
help them recover? I understand that MK gel batteries are very good quality
(and a very high price to match) so I am hopeful that they may survive.