Gimpy wrote:
Need info on some type of battery load/checker for ( 12volt 34 type U1 Ah
SLA Battery ) These are generally used in electric wheelchairs/scooters.
Have been told not to load check these batteries by a couple of local
battery stores, but know for a fact the places that sell them do use some
sort of load checker for checking on them for warranty puposes. Anyone know
for sure & what might be available in a not to expensive checker. Thanks
Gimpy.

http://www.vard.org/jour/83/20/1/pdf/kauzlarich.pdf

AFAIK the use a standard lead-acid battery but the wheelchairs are
driven by a PWM control system rather than as an essentially DC load
for starting an automobile, for example. The above link is a paper on
some testing procedures/results.

Seems as though would use the chair itself as a test load and check for
loaded voltage as the first approximation.

Is there a problem w/ the chair supplier not being able to test or
simply wanting something independent?

I don't believe a standard load test is really applicable rather than
there being a reason it can't be done, though, in response to initial
question.

So, nothing specific, but a few ideas and one reference that might
prove educational on the subject.

HTH....