Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > General Discussion> Hotrodders' Lounge> Off-Topic> Battery of the future LiFePO4, I got mine
User Name
Password
lost password?   |   register now

Thread: Battery of the future LiFePO4, I got mine Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
12-04-2012 05:31 PM
deckofficer
Quote:
Originally Posted by NEW INTERIORS View Post
I agree.. Nothing is made today to last long.. Run it until it goes out.. Throw it away and buy another one.. Isn't that how it goes..
I hope not in the case of this small battery shipment, and really hope not for the big cells that will run $13,800.00.
12-04-2012 05:21 PM
NEW INTERIORS
Quote:
Originally Posted by Irelands child View Post
I seriously doubt that these are 'lifetime' regardless of the advertising hype.

Ain't gonna happen
I agree.. Nothing is made today to last long.. Run it until it goes out.. Throw it away and buy another one.. Isn't that how it goes..
12-04-2012 05:19 PM
NEW INTERIORS
Quote:
Originally Posted by deckofficer View Post
For just a 450 mile shipment, they sure packaged them well.
One of the two banks, and packed tight with closed cell foam sheets.




I'm sure it's got more to do with the shipping rules then anything..
12-04-2012 05:07 PM
deckofficer For just a 450 mile shipment, they sure packaged them well.
One of the two banks, and packed tight with closed cell foam sheets.




12-04-2012 12:42 PM
deckofficer sedanbob,

You are one astute guy. We as a nation used to lead the way in technology and I hope we can return to that position.
12-04-2012 12:25 PM
sedanbob Deckofficer, Your electric Kayak sounds cool - especially if you can go for extended periods using just the batteries and solar panels! Batteries like these are part of the improvements to be had from additional renewable energy research! Part of the reason China is the only game in town (currently) is that we have been listening to the oil lobby and not investing in new technology here! Maybe we will wise up and become the leader in this and many other technologies, like we can be!
12-04-2012 12:08 PM
deckofficer I don't have much choice but to buy the China cells. I have a offer on this one-off prototype catamaran trawler with 6 kw of solar panels. If I want this to be a more capable long range cruiser I'll have to refit with 50+ kw-hr lithium batteries and as of now, China is the only game in town.

BTW Boatbob2, this boat is currently in your neck of the woods and makes runs to the Bahamas without using any diesel.
12-04-2012 11:59 AM
boatbob2
Huh ?????????

I can afford those batteries,BUT,i would not buy them BECAUSE they are made in CHINA,i would not like to go thru the hassle on warranty..I BUY AMERICAN..........(as much as possible)
12-04-2012 11:47 AM
deckofficer The pace in my electric kayak is rather sedate, around 6 mph pulling about 220 watts. The (2) blocks of cells are 12.8 volts at 200 a-hr or 2560 w-hr storage. 70 mile range at 100% DOD, so never want to push it that far, but at 80% DOD, a 56 mile range which at 10 hours of travel is about all I could handle myself.

The goal with a couple of solar panels is to be able to cover 75 miles every 2 days AND run a small Engel freezer to keep my steaks frozen and make ice for the ice chest. Then I will be able to kayak camp for weeks and sail down the Sea of Cortez in Mexico.
12-04-2012 11:27 AM
DanielC "These cells with their cycle life will out live me. This is one of two packs I bought, the other still in the garage. 31 lbs and can store enough energy to propel the kayak 30+ miles per pack."

This would be great if true, but until proven, I am sceptical. "will out live me" That is a pretty strong statement. Are you really sure? Actually bet your life on it? Or is it a case of that is what is advertised, and expected, but not yet actually tested.

"store enough energy to propel the kayak 30+ miles per pack."
What does that mean? How many amp hours, or kilowatt hours, at what discharge rate?

How long to recharge?

Show me the battery that can lift a 747 from sea level, to 30,000 feet, then fly it 8,000 miles, with 400 passengers, and their luggage, that will fit in the wings and fuselage of that airplane.

I actually would think it would be great to have an electric car. I have given some thought of taking one of my old Datsun pickups, and converting it to electric, and putting the batteries in the bed. Even thought of putting a lot of excess capacity in the battery pack, driving an almost dead truck to one of the local electric free recharging stations that are becoming popular in Oregon, and actually using the battery at home, instead of electricity through my meter.
12-04-2012 10:59 AM
deckofficer My lifetime, which isn't that much longer, but 2000 cycles. These are the batteries (lithium) that power future electric cars and the required testing proved 2000 cycles to 80% DOD (depth of discharge) before the advertised capacity drops to 80%, which is still a good battery. I'll be discharging at a rate of around 50 cycles per year and I don't expect myself to live to 100.

Not advertising hype, you purchase this type of battery for the amount of cycles it can do, and they have been tested to perform at that service. Do you think Detroit would sell an electric car if they couldn't warrant the expensive battery? The Tesla S uses these batteries (a lot more of them than my 8 cell purchase) for a 300 mile range X 0.8 (DOD) = 240 miles X 2000 (cycles) = 480,000 miles on the battery pack before its capacity is reduced by 20%.

Even though expensive, for the given cycle life they are a bargain. The above pack has (4) 3.2 volt cells to make a 12 volt battery for my electric propelled kayak, I bought (8) cells for $880.00 to make (2) 12 volt batteries that will allow more than 60 miles of travel per charge.

Batteries like these were $2000 just 4 years ago and impossible to get unless you worked in R&D for a large corporation. Now the same amount of kW-hr of storage has dropped to $880 but still rather hard to get. "Lifetime" is a term I used as a 60 year old concerning myself. It is getting to the point that no matter what I post on this forum I am challenged on. I give a glimpse into the future, and the naysayers come out of the woodwork. It is a good thing progress continues on even with this forum's doubters, because with the attitudes expressed here we would still be driving with flathead engines.

12-04-2012 08:43 AM
Irelands child I seriously doubt that these are 'lifetime' regardless of the advertising hype.

Ain't gonna happen
12-04-2012 07:25 AM
gearheadslife lifetime battery... I'll believe that in 20 years and no one sells batteries anymore..
12-04-2012 06:39 AM
CrashFarmer2 A lifetime battery?
It's kind of wild looking.
12-04-2012 01:02 AM
deckofficer
Battery of the future LiFePO4, I got mine

After 3 1/2 months they finally arrived. Notice the serious banding due to the cells ability for huge discharge and ultra fast charging causes bulging. These cells with their cycle life will out live me. This is one of two packs I bought, the other still in the garage. 31 lbs and can store enough energy to propel the kayak 30+ miles per pack.


Cells generally receive a 50% charge at the factory in China. 3 of the 4 cells read 3.32 volts, the one on the far left was 3.31 volts. Only 1/100th of a volt difference.




Pack voltage



Posting Rules
You may post new threads
You may 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


All times are GMT -6. The time now is 02:15 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.