Battery Dies At forty
GEL is an amazing lead acid technology for deep cycling however the greedy producers destroyed their own market by advising far too excessive a charging voltage. I actually have each East Penn and Sonnenschein Prevailer GEL banks on customers boats which have gone years, correctly charged, and others useless in thirteen months which were incorrectly charged.
Set this dial and the power supply will shield itself. Top balancing, even at three.600VPC needs to be closely monitored. Like equalizing flooded batteries you merely don't need to leave them unattended at these voltages for lengthy intervals of time. Once the cells hit 3.600VPC (three.800 VPC in picture) you could need to regulate your power provide, very rigorously, so it does not overshoot target prime-steadiness voltage.
It will prevent $400.00 in your time twiddling with prime balancing alone. You shall be in search of a 0-30V and zero-10A or bigger mannequin. The EX in the Mastech line signifies these items are particularly designed for charging batteries, often Li batteries. The dial second from the left is EX knob or the over voltage protection dial.
For our lack of a have to re-balance I credit good preliminary cell matching, balancing and enough, but not extreme, charging voltages. I purposely maintaining my very own financial institution out of the knee ranges on cost and discharge cycles. I favor to think about a BMS as a BIP, or battery insurance coverage policy.
Oh yeah, I know, just tell them they can be charged at regular lead acid voltages and we'll promote extra. If I recall the GEL battery makers already tried that and look the place their market share is right now.
These aren't the fanciest or the costliest power supplies but they work and they work fairly properly, especially for the worth. Years in the past these gadgets would have run four figures every but right now they are very moderately priced. A Mastech 3020EX (30V X 20A) will run you just $219.ninety five.
A charge and load bus (twin bus system) can also be a very good consideration. Hmmm, lets sit in a smokey Chinese manufacturing unit again room and figure this out?
As I actually have mentioned earlier than the height safe voltages are simply that “peaks”. As may be seen beneath the cells charged to only a hair over three.8V then had been instantly discharged. A “peak” very brief time period period at this voltage earlier than a turnaround proper into a high rate discharge is how this lab test was done. The bench prime energy supplies we typically use are made by Mastech, particularly the Mastech EX series.
It is there solely to make sure your cells cannot be over charged, over discharged or pushed too far into temp limits. Not all DIY or manufacturing facility made BMS products characteristic temp monitoring or temp protection. Lack of temp monitoring or low temp cut-offs can have damaging results.