Reply
 
Thread Tools Display Modes
 
Old 06-24-2019, 06:47 PM   #1
New Member
 
queen_bee's Avatar
 
Join Date: Dec 2018
Posts: 5
Year: 2003
Chassis: Microbird
Engine: 7.3L Diesel
Solar System Help!

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.
queen_bee is offline   Reply With Quote
Old 06-24-2019, 06:52 PM   #2
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 6,783
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
You'll need more amp hour batteries, or more batteries.


https://www.explorist.life/solarwiringdiagrams/
o1marc is offline   Reply With Quote
Old 06-24-2019, 06:59 PM   #3
Site Team
 
Johnny Mullet's Avatar
 
Join Date: Oct 2017
Location: Ashtabula, Ohio
Posts: 1,069
Year: 1996
Coachwork: Thomas
Chassis: International
Engine: T444E 7.3L
Yup. Totally upgrade the battery bank to a minimum of 200 amp hrs.
__________________
Mullet's Thunder Bus Build
Johnny Mullet is offline   Reply With Quote
Old 06-24-2019, 07:05 PM   #4
New Member
 
queen_bee's Avatar
 
Join Date: Dec 2018
Posts: 5
Year: 2003
Chassis: Microbird
Engine: 7.3L Diesel
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!
queen_bee is offline   Reply With Quote
Old 06-24-2019, 07:21 PM   #5
Bus Crazy
 
HazMatt's Avatar
 
Join Date: Oct 2017
Location: E Central Tejas
Posts: 1,623
Year: 1998
Coachwork: Thomas
Chassis: IH 3800, 8 window
Engine: T444E w/ Spicer 5-speed MT
Rated Cap: I prefer broad-brims hats
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.
__________________
Those who say that it cannot be done should not interrupt the people doing it.
HazMatt is offline   Reply With Quote
Old 06-24-2019, 08:25 PM   #6
Bus Crazy
 
2kool4skool's Avatar
 
Join Date: Oct 2015
Location: Spring Valley AZ
Posts: 1,190
Year: 2000
Coachwork: Bluebird
Engine: 5.9 Cummins
Rated Cap: 2 elderly children, 1 cat
For our use, 650ah is just right. AGM.
__________________
Don, Mary and Spooky the cat.
2kool4skool is offline   Reply With Quote
Old 06-25-2019, 10:40 AM   #7
Bus Nut
 
TheHubbardBus's Avatar
 
Join Date: Apr 2019
Location: Hotzona
Posts: 273
Year: 2003
Coachwork: IC
Chassis: 3800
Engine: Navistar T444e
Rated Cap: 24
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.
__________________
- Sharon & Jody
TheHubbardBus is offline   Reply With Quote
Old 06-25-2019, 12:00 PM   #8
Site Team
 
JDOnTheGo's Avatar
 
Join Date: Feb 2017
Location: The West
Posts: 959
Year: 1998
Coachwork: MCI
Chassis: 102 EL3
Engine: DD 60
Quote:
Originally Posted by queen_bee View Post
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.

Quote:
Originally Posted by TheHubbardBus View Post
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??
__________________
JD - Full timer out west
Missy - 1998 MCI 102-EL3 - 1.7kW Solar - 10kWh Lithium
My Adventures & Build
JDOnTheGo is offline   Reply With Quote
Old 06-25-2019, 12:14 PM   #9
Bus Crazy
 
HazMatt's Avatar
 
Join Date: Oct 2017
Location: E Central Tejas
Posts: 1,623
Year: 1998
Coachwork: Thomas
Chassis: IH 3800, 8 window
Engine: T444E w/ Spicer 5-speed MT
Rated Cap: I prefer broad-brims hats
Nawp! No changes...
I saw this when it originally posted. Didn't immediately comment due to details dearth.
__________________
Those who say that it cannot be done should not interrupt the people doing it.
HazMatt is offline   Reply With Quote
Reply

Tags
solar

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:20 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.