Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-05-2008, 04:29 PM   #1 (permalink)
Nomadic Chicken
 
WaxyChicken's Avatar
 
Join Date: Jan 2008
Location: Phoenix, AZ
Posts: 350
Thanks: 2
Thanked 0 Times in 0 Posts
Battery Jumper Alt use?

Alright, so i took apart my old battery jumper to see why it died.
As it was predicted from the forum it has one SLA battery (12v 17ah/20hr) that has gone dead.

I can find a replacement online for around $30.00 USD (if i can't find one at walmart or somewhere else local) but what i'm wondering is this:

The battery jumper takes in a regular household plug, charges the 12v SLA, has DC Output (cig lighter plug), and has jumper output for starting your dead car battery. From dead to full with the battery in the current ill state it will take approximately 16 to 20 hours to charge the stored SLA battery.

So Is there an alternate use for this piece of equipment? something i could use for my future EV project?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-05-2008, 09:53 PM   #2 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,528

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,977 Times in 3,613 Posts
Well, you've got a 12v battery charger. Depending on how you set up your 12v system it could be your onboard charger (if you don't use a DC-DC converter).
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 04-05-2008, 10:57 PM   #3 (permalink)
Nomadic Chicken
 
WaxyChicken's Avatar
 
Join Date: Jan 2008
Location: Phoenix, AZ
Posts: 350
Thanks: 2
Thanked 0 Times in 0 Posts
it sounds like that would be an awfully slow recharger, comparable to Ben Nelson's Electro bike charger. Especially if you consider that i will likely be going with 72v or more with the batteries.
  Reply With Quote
Old 04-05-2008, 11:58 PM   #4 (permalink)
Awesomeness personified
 
AndrewJ's Avatar
 
Join Date: Dec 2007
Location: Columbia, MO
Posts: 642

Harold - '94 Honda Civic CX
90 day: 54.51 mpg (US)

Margot - '08 Surly Big Dummy
Thanks: 0
Thanked 28 Times in 18 Posts
Send a message via AIM to AndrewJ
Uhh, it ain't gonna do 72 volts.

Unless of course you take each 12v batt out of the pack and charge it 24 hours on it's own.

Only 3 days for a full recharge.
__________________
"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." - The Drive By Truckers.

  Reply With Quote
Old 04-06-2008, 01:52 AM   #5 (permalink)
EV test pilot
 
bennelson's Avatar
 
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,435

Electric Cycle - '81 Kawasaki KZ440
90 day: 334.6 mpg (US)

S10 - '95 Chevy S10
90 day: 30.48 mpg (US)

Electro-Metro - '96 Ben Nelson's "Electro-Metro"
90 day: 129.81 mpg (US)

The Wife's Car - Plug-in Prius - '04 Toyota Prius
90 day: 78.16 mpg (US)
Thanks: 17
Thanked 663 Times in 388 Posts
I think he meant for your 12V accessory battery! Not your main power pack!

The charger on my motorcycle IS terribly slow, but efficient.
__________________


300mpg.org Learn how to BUILD YOUR OWN ELECTRIC CAR CHEAP
My YouTube Videos
  Reply With Quote
Old 04-06-2008, 02:26 AM   #6 (permalink)
Nomadic Chicken
 
WaxyChicken's Avatar
 
Join Date: Jan 2008
Location: Phoenix, AZ
Posts: 350
Thanks: 2
Thanked 0 Times in 0 Posts
Gotcha!

Run the accessories from a cheaper 12v battery, have a separate power supply for the main drive system.

Blair my radio and play with the power windows all i want, it will only kill the 12v accessory battery and not the main drive system which can be recharged using the booster I have. It won't decrease my range or motor performance just by leaving my radio or lights on.

Thanks guys. Later on i'll just have to sort out what i want to run on the 12v and what i want to run with the main pack with a dc/dc converter (such as vacuum brakes).

  Reply With Quote
Reply  Post New Thread




Similar Threads
Thread Thread Starter Forum Replies Last Post
eta: super efficient 3 wheeled car (project thread) eta EcoModding Central 76 02-18-2014 12:02 PM
cheap, light-weight EV battery? eta Fossil Fuel Free 5 05-15-2009 02:00 AM
Split battery power apgrok1 EcoModding Central 3 03-13-2008 10:59 PM
How Low Can You(r Battery) Go? Fuzzy EcoModding Central 2 01-07-2008 11:15 PM
New TSA Battery Regulations -- Yay! RH77 The Lounge 2 01-02-2008 01:10 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com