[RE-wrenches] Magnum MM1524AE rebuild?

Jeff Clearwater jeffc at villagepowerdesign.com
Wed Jun 9 12:13:03 EDT 2021


Hey Dave and Wrenches,

This is why now I always install a pre-charge circuit for Magnum's and 
other inverters - especially on a Lithium pack with a BMS.  A momentary 
on-off switch and 50 watt 20 ohm resistor - $20 worth of parts = a 
lifetime of less stress on main breaker - inverter caps and battery 
BMS.  I recommend it for any inverter over 2 KW.  Many LiFePO4 BMS's 
will shut down when sensing that much inrush so it's a must on many systems.

Best,

Jeff Clearwater
Village Power Design


> palumbo131m at gmail.com <mailto:palumbo131m at gmail.com>
> June 8, 2021 at 6:01 AM
>
> Is a Magnum MM1524AE inverter/charger repairable and if so by whom?
>
> It failed after being reconnected to a battery bank, the typical small 
> spark at the battery terminal when being reconnected was accompanied 
> by a popping sound in the Magnum. Killed the Magnum.
>
> Dave Palumbo
>
> Hyde Park, VT
>
>
>
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