Converter-Charger sizing vs batt AH

Anything electric, AC or DC

Converter-Charger sizing vs batt AH

Postby fishboat » Sun May 19, 2019 11:12 am

From one, hard to find, hit I've found on the web, and nothing on tnttt that I've found so far, the rule of thumb for converter-charger sizing vs total batt amp-hrs appears to be 10%. That is, if you have 220AH total in batts (2 x 6v golf cart batts) then your charger should be about 22-amp.

Is this true?

I'm thinking 220 AH batts and a 30A charger..seem reasonable? If the charger is scaled up to say 45A is there any harm to the batts?

The charger would be a smart-4 stage unit.

thx..
fishboat
Teardrop Advisor
 
Posts: 72
Joined: Tue Sep 11, 2018 2:47 pm

Re: Converter-Charger sizing vs batt AH

Postby bdosborn » Sun May 19, 2019 11:49 am

Here's a good article on sizing battery chargers.

http://www.smartgauge.co.uk/chargesize.html

As in most thing having to do with batteries, the correct answer is "it depends". :lol:

Bruce
2009 6.5'X11' TTT - Boxcar
Image
Boxcar Build
User avatar
bdosborn
Donating Member
 
Posts: 4427
Images: 475
Joined: Wed May 05, 2004 11:10 pm
Location: CO, Littleton

Re: Converter-Charger sizing vs batt AH

Postby fishboat » Sun May 19, 2019 4:20 pm

Yah.."it depends" is often the best answer to nearly any question anyone can pose of about any topic.

That being said, good article.. I hadn't seen it. It puts things in perspective and highlights about the most common law right after "it depends"...that being.."everything is trade-off". To get something you want, you need to accept something you don't want.."faster, cheaper, better?".."pick two"

Looks like I'll be getting a little larger charger and accept a little less battery life.

thx..
fishboat
Teardrop Advisor
 
Posts: 72
Joined: Tue Sep 11, 2018 2:47 pm
Top

Re: Converter-Charger sizing vs batt AH

Postby Bill n Robi » Sun May 19, 2019 5:26 pm

My TD came with a WFCO 25 converter/charger - WAY under powered. You dont really run on the converter side of things, you use battery and recharge them when you get low. The WFCO has a fan for cooling the internals when the POWER DRAW - NOT the heat is at 6 amps - and it runs 20 minutes out of every hour.

I swapped mine out to a higher amp and better quality.

as they say YMMV but go with more capacity, it costs more to upgrade later.
2015 T@G Max
2015 Toyota Tacoma TRD Sport 4 Door Short Bed
User avatar
Bill n Robi
The 300 Club
 
Posts: 378
Images: 4
Joined: Mon Dec 01, 2014 4:32 pm
Location: Big Pine, Ca
Top


Return to Electrical Secrets

Who is online

Users browsing this forum: No registered users and 4 guests