Manual confusion.. KILL your batteries??

Started by carilchasens, May 22, 2016, 01:24:22 PM

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carilchasens

In the Classic owner’s manual RevG 2056, page 10, "How to KILL Your Batteries," it says:
"Not using ALL EQUAL LENGTH interconnect cables on each string (It is important that ALL strings be wired EXACTY the same way. Any variance in resistance on one string vs another will cause in-balance and the batteries will be dead in less than 6 months)"
How would this happen? Wouldn't the system have at least the voltage of the least resistive string?  :o :-\

russ_drinkwater

Depending on what type of battery you are running it would take a lot longer and larger diameter heavy connecting leads have less resistance. To be fair it is not best practice and I would say to only use leads in this way in an emergency to get your system up and running.
ASAP ensure the makeshift leads are replaced with equal length suitable diameter leads to ensure the life of your cells. There are also instructions on the net to show correct sequence to ensure all your batteries get a balanced near as equal charge.
Standalone. 20 Hyundai x 220 watts panels, 2 x classic 150's, Latronics 24 volt 3kw inverter, Whiz bang Jnr, 12 Rolls surrete  4KS 25P  batteries and WBJ.
Grid tie feed-in, 12.5 kw in 3 arrays generating 50 kws per day average. Solar river grid tie inverters

dgd

Classic 250, 150,  20 140w, 6 250w PVs, 2Kw turbine, MN ac Clipper, Epanel/MNdc, Trace SW3024E (1997), Century 1050Ah 24V FLA (1999). Arduino power monitoring and web server.  Off grid since 4/2000
West Auckland, New Zealand


russ_drinkwater

And do not leave them sitting around for 12 months without proper charge waiting for you to get yourself organised and them connected!
::)
Standalone. 20 Hyundai x 220 watts panels, 2 x classic 150's, Latronics 24 volt 3kw inverter, Whiz bang Jnr, 12 Rolls surrete  4KS 25P  batteries and WBJ.
Grid tie feed-in, 12.5 kw in 3 arrays generating 50 kws per day average. Solar river grid tie inverters