Solar System Help!

[queen_bee]

Hi there, I'm extreme beginner and I've hit a snag with my system design.


Here are the major components I have:


300W of panels
40a mppt charge controller

100ah lithium battery
2000w inverter


The only problem is I discovered today that my battery only has a max discharge of 50A! Can I still make this work with some adjustments? or should I try to get something else?


Thanks anyone.

[o1marc]

You'll need more amp hour batteries, or more batteries.


https://www.explorist.life/solarwiringdiagrams/

[Johnny Mullet]

Yup. Totally upgrade the battery bank to a minimum of 200 amp hrs.

[queen_bee]

Well I realize that. my question is more about the current configuration and how the draw limitation will effect the system setup. The goal is to scale up the bank once I get the $$ . Any advice on that? Thanks!

[HazMatt]

Not to flog a dead horse, but without increasing the amp hours capabilities of your battery bank, you're going to have to exercise a very judicious use of your appliances, so's not to draw that battery critically low.

[2kool4skool]

For our use, 650ah is just right. AGM.

[TheHubbardBus]

Was the question edited?


It seems everyone's stating you need 'X' amount of amp-hours and/or more batteries, but I don't see anything in your post regarding your power needs / anticipated use. Without that data, neither you nor anyone else can adequately answer your question. 100Ah w/ 50A max discharge rate could be extreme overkill, grossly insufficient, or somewhere in between. It all depends on what you're powering, how long you're powering it, and what's drawing power concurrently.

[JDOnTheGo]

Originally Posted by queen_bee

100ah lithium battery

The only problem is I discovered today that my battery only has a max discharge of 50A! Can I still make this work with some adjustments? or should I try to get something else?

Details matter, of course but most lithium chemistry batteries are good for 85% discharge (or thereabouts). Lead-acid batteries are in the 50% max discharge range.

Originally Posted by TheHubbardBus

Was the question edited?

It seems everyone's stating you need 'X' amount of amp-hours and/or more batteries, but I don't see anything in your post regarding your power needs / anticipated use. Without that data, neither you nor anyone else can adequately answer your question. 100Ah w/ 50A max discharge rate could be extreme overkill, grossly insufficient, or somewhere in between. It all depends on what you're powering, how long you're powering it, and what's drawing power concurrently.

Excellent - I was wondering exactly the same thing. Maybe this is a branch from some other thread where the details were noted??

[HazMatt]

Nawp! No changes...
I saw this when it originally posted. Didn't immediately comment due to details dearth.