If $30 was a drawback, I just checked and the only regulator they are showing for Lead Acid is now the MK3SMT and it is $75.
eric SV Meander
---In electricboats@yahoogroups.com, <matwete@...> wrote :
"I took a short pass looking at electronic methods for shunting currents and quickly decided it was too complicated. I like simple solutions which I feel are more reliable"
Interesting…for at least the past 2 decades now, shunt regulators have been the means to protecting batteries in a string, whether lead-acid or lithium. Arguably, the cheapest, reliable and fairly decent balancers for lead acid batteries within a string is to simply use an appropriate power zener and a light bulb (was common to use these across 6v lead acid batteries). This requires zero electronics, certainly isn't complicated and can be done for less than $10/battery---plus you get a nice light show as the bypass currents start flowing...
Perhaps the longest running available regulators used by EV conversion folks for lead acid batteries in a string has been the "Rudman regulators" from Manzanita Micro in Northern Washington. EV enthusiasts for the past 2 decades have sworn by them to manage their batteries---drawback has always been not that it was too complicated but that at $35/ea or so, the impact on battery pack cost was significant.
FWIW-
-MT
Posted by: cirejay@hotmail.com
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