I’m looking for input from other Hartenberger users out there who have taken the time to re-core the battery backs for their Hartenberger strobes. I currently have a pair of 250 TTLhs’ with 4 batteries. One of the batteries has died (internally shorted battery in the series) and I think another one is on its last leg. The other two are carrying ~70% capacity.
As far as I can tell, the factory batteries appear to be made with Sanyo CP-2400SCR cells. They are reported to be among the best available and are capable of 60amp discharge rates, but I haven’t been overly impressed with their longevity. I’ve probably put ~ 200 cycles through mine in the past 3.5 years.
As a result, I’m now looking at re-coring with NiMH cells. Some of the new cells are up to 4500mah and can pulse discharge at rates up to 50amps. I know at least one of you out there has done the same. What type of cells did you use? Who did you have assemble the packs?