For disconnects, I'd just use Andersen quick connects. That's what they
use on forklifts and other industrial battery operated machines. Also,
the Magnum would act as the vehicle charger, and would be a much better
charger than the stock golf cart models.
Ray Walters
Remote Solar
303 505-8760
On 3/15/22 4:46 PM, Jason Szumlanski wrote:
That's what I was thinking- a MS4448 would be a nice option with a
good surge rating.
I'm trying to make this work with little to minimal equipment onboard
the golf cart. Ideally, the battery would connect to a
stationary inverter/charger at the house via a cable/connector. The PV
would be permanently mounted also and would be grid-tied for times the
battery is not connected. I am thinking this needs to be an AC coupled
scenario with a grid-tie inverter that is AC coupled to the battery
inverter. I'm hung up on how to safely connect the battery to the
inverter (and more importantly, disconnect the battery from the inverter).
Jason
*
*
On Tue, Mar 15, 2022 at 6:29 PM Ray Walters <r...@solarray.com> wrote:
Most carts run at 48vdc these days. They either have eight 6 volt
batteries, or six 8 v batteries. I would think that would make a
good
match for power backup with a 4kw range inverter like the Magnum
MS4448.
Ray
On 3/15/2022 12:18 PM, Nick A Lucchese wrote:
> Not sure what the golf cart fleets are these days but decades
ago as a youngster I worked at a course where all the EZ-GO’s were
36v nominal with all Trojan T-105’s. Also uncertain if still
available or not but years ago the first Cybo inverters I
purchased were also intended for 36v nominal battery banks.
Perhaps George and the team still offer that model. It’s obviously
a different type of architecture and I didn’t have any luck with
the 4 amp 36v charger on the inverter’s AC output that was
promoted but surely you could figure your means of charging with
perhaps a Flexmax or similar. I had some issues with the hot water
heater model but the off grid model consistently performed it’s
inverting function assuming there was a fan or some sort of
resistive or inductive load to keep the inverter awake. The only
other 36v inverter I can think of was the Heart Transverter which
was a big loss for a few of us.
>
> https://www.cyboenergy.com/products/offgridoverview.html
>
> Best of luck Jason, Nick
>
>
>
>
>> On Mar 14, 2022, at 3:48 PM, Jason Szumlanski
<ja...@floridasolardesigngroup.com> wrote:
>>
>> Every now and then I get questions here in the land of
hurricanes and golf courses about using golf carts as the battery
bank for a permanently mounted grid-tie home PV system in a backup
scenario. Does anyone have any ideas on a good way to do something
like this? The battery would need to be able to be unplugged of
course (not under load I hope!) It's mostly DIY'ers trying to
cobble together a solution for a small critical load panel for
their home.
>>
>> The idea is becoming more popular as people hear about using
EVs for home backup. I'd like to get ahead of it and maybe even
offer a solution that's safe, legal, and functional.
>>
>> Jason Szumlanski
>> Florida Solar Design Group
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