question

graveyphil avatar image
graveyphil asked

MPPT 100/20 will load be able to be used to top up another battery

i have connected the load via an anderson meter to a spare 130A/H lead carbon battery that conveniently fits in an unused cupboard with a 450w 12 v inverter i use to charge my computer, ebike and golf battery... these photos were of todays 'test' without load on the inverter... If this works the biggest load would be a small compressor freezer 3.2amp... Panels are 2 x 140w [more than 10 years old] and batteries 2 X 240A/H lead acid [5 years and were struggling before installing a dc/dc engine battery charger

... this was not a great sunshine day....both app and meter showing similar amps and volts... what will the max voltage be from the load???

extra charging from motor = 50 amps to house batteries

1652008975620.png

1652010558161.png

MPPT Controllersbattery charginginverter current draw
1652008975620.png (56.8 KiB)
1652010558161.png (67.1 KiB)
1 comment
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

@gravey.phil

I am not completely understanding your question what will the max voltage be from the load???

How has your load output been configured?

In the each option there is a voltage range defined except the option for always on. As far as I am aware it can only go as high as your system battery does.

0 Likes 0 ·
2 Answers
graveyphil avatar image
graveyphil answered ·

i am just using the default setting... will the load voltage match the voltage being sent to my RV batteries?

2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

peter-3 avatar image
peter-3 answered ·

Yes I think they are the same voltage .

2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.