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Re: Charger problems


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Posted by jdemaris on April 23, 2010 at 07:35:28 from (67.142.130.18):

In Reply to: Re: OT Electric Golf Cart Charging Question posted by T_Bone on April 22, 2010 at 22:31:21:

Two problems with that, in general. Not necessarily with the Honda EU2000 since I know nothing about it specifically.

A house solar-system using a battery, controller/charger, and solar panels often needs supplemental charging via a fuel-driven genset. It is this sort of application where many people using solar discovered that AC portable gensets do not work well with conventional battery chargers. Many test have been done for a work-around. Cheapest fix is a gas-driven DC charger made from an auto-alternator. Also, 10% step-up transformers used with AC gensets.

DC gensets are a different story. The Honda EU might be DC, I'm not sure. If so, it will probably work fine with a low-end charger. If AC, it' won't.

So, there are two potential problems.

#1 - an AC genset not working well with a battery charger.

#2 - Often, the direct DC output from an AC generator is unregulated and trips at 8 to 10 amps. Won't charge a battery with a high demand. "All or nothing" sort of thing.
Not in all cases, but often.

A few tests we ran here:

Portable gensets hooked to a small 12 amp charger.
Note that the Honeywell is the only DC inverter based genset we tested. All others are AC.

Honda EM3800 - max output of 3 amps
Jetman GG1200 generator - max output of 3 amps
Homelite 4400 generator - max outpout of 3 amps
Coleman 1800 generator - max output of 3 amps
Honeywell 2000 inverter - max output of 11 amps

Portable gensets hooked to large AC charger:

Honda EM3800 - max output of 9 amps
Jetman GG1200 generator - max output of 8 amps
Homelite 4400 generator - max output of 9 amps
Coleman 1800 generator - max output of 9 amps
Honeywell 2000 inverter - max output of 25 amps

Portable gensets used with a special electronic
battery charger - Xantrex Truecharge 40 amp ($400)

Honda EM3800 - max output of 30 amps
Jetman GG1200 generator - max output of 28 amps
Homelite 4400 generator - max output of 30 amps
Coleman 1800 generator - max output of 30 amps
Honeywell 2000 inverter - max output of 36 amps


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