Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 01-23-2020, 07:56 PM   #1 (permalink)
Banned
 
Join Date: Feb 2018
Location: Brazil
Posts: 1,476
Thanks: 14
Thanked 362 Times in 327 Posts
Had LIFEPO4 battery became cheapper ???

On Brazil there was a LIFEPO4 battery (Litihum based), with about 3000 cycles life (at 80%), and indicated for motorcyles.
It was expansive for a 14A 12V. It ws ALIANT, a Italian manufactur.

https://produto.mercadolivre.com.br/...BwE&quantity=1

Now there is a other brand, SKYICH, with 2000 cycles (at 80% I think) 14A and 12V, but while ALLIANT costs 880 reals the SKYRICH costs 214 reals.

https://produto.mercadolivre.com.br/...a-5004f62c045f

Why a LIFEPO4 it's so much cheaper than other very similar???

And the SKYRICH have better CCA value, of 888 while the RELIANT have just 245.

The 50% extra cycles of the expansive one (RELIANT) do not make the 4x price acceptable.

Can we use 3 or 4 of such batteries as energy source for a e-bike or e-trike???

If LIFEPO4 have more cycles (up to 3000) and very little danger of fire/explosion, why it it's not used in electric cars as main battery???
Is it just due the lower energy density, or something else too???

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-23-2020, 10:00 PM   #2 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 9,297

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.85 mpg (US)
Thanks: 3,227
Thanked 3,548 Times in 2,647 Posts
Reals? Are you for real?

You've answered your own question though. The name of the game is more range, less weight and volume.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Old 01-24-2020, 03:19 AM   #3 (permalink)
EV convert
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 9,552

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 228
Thanked 3,123 Times in 2,443 Posts
New LiFePO4 appears to have always been cheaper than traditional "lithium ion".
LiFePO4 appears to have a shorter life, lower energy density and worse cold weather effects.
If the leaf had LiFePO4 it would be useless in the winter.
Bit LiFePO4 is supposedly easy to make and doesn't require any hard to get elements.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 01-24-2020, 06:38 AM   #4 (permalink)
Banned
 
Join Date: Feb 2018
Location: Brazil
Posts: 1,476
Thanks: 14
Thanked 362 Times in 327 Posts
Real it's our coins on Brazil : https://en.wikipedia.org/wiki/Brazilian_real

If LIFEFO4 have lower price and HAVE 2000 OR 3000 CYCLES (deppend on brand manufacturer) agains just 1000 cycles of of higher energy density lithium batteries, and cost less, and have LESS FIRE HAZARD, maybe it could be used more often in small electric car or trikes.

But my main question it's about the price variation, since the link show two batteries of 14A and 12V, but one costs 4X moe than the other.

The price it's close to lead acid battereis of 15A 12V for e-skate. his is strange...
https://produto.mercadolivre.com.br/...0-643e214a09ae

Quote:
Originally Posted by redpoint5 View Post
Reals? Are you for real?

You've answered your own question though. The name of the game is more range, less weight and volume.

Last edited by All Darc; 01-24-2020 at 06:57 AM..
  Reply With Quote
Old 01-24-2020, 06:45 AM   #5 (permalink)
Banned
 
Join Date: Feb 2018
Location: Brazil
Posts: 1,476
Thanks: 14
Thanked 362 Times in 327 Posts
These ones from these links reachs 2000 and 3000 cycles at 80% of original charge.

Quote:
Originally Posted by oil pan 4 View Post
New LiFePO4 appears to have always been cheaper than traditional "lithium ion".
LiFePO4 appears to have a shorter life, lower energy density and worse cold weather effects.
If the leaf had LiFePO4 it would be useless in the winter.
Bit LiFePO4 is supposedly easy to make and doesn't require any hard to get elements.
  Reply With Quote
Old 01-27-2020, 05:02 PM   #6 (permalink)
Banned
 
Join Date: Feb 2018
Location: Brazil
Posts: 1,476
Thanks: 14
Thanked 362 Times in 327 Posts
SOAB trick seller. He display a announce with specifications for a 14A battery, but when we ask hin about that price was for a 5A battery.

So the price did not got lower. It's just a trick.
  Reply With Quote
Old 01-27-2020, 06:21 PM   #7 (permalink)
EV convert
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 9,552

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 228
Thanked 3,123 Times in 2,443 Posts
Try charging them when it's really cold.
First time they get charged when they're colder than +20F that will shave off about 500 to 600 of those cycles.

As they approach 0F they become nearly useless.

They'refine as long as you have an excellent thermal management system. To me the best application for LiFePO4 is a plug in hybrid with a lead acid 12v. That way you can get unlimited heat for the battery when it's cold.

__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com