Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
LiFePO4 Batteries: Discussion Thread
Page: Previous  1, 2, 3 ... 30, 31, 32 ... 43, 44, 45  Next
Jump to:
Forum Index -> Vanagon Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
Vanuber
Samba Member


Joined: February 16, 2020
Posts: 410
Location: Virginia
Vanuber is offline 

PostPosted: Tue Jun 01, 2021 1:13 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

Crooked Designer wrote:
Any thoughts on which of these two IP22 is 30 amp and IP67 is 25 amp. May also get a small trickle charger for starter battery for storage in winter.


I highly recommend the IP22 over the IP67 if you will ever be in a shore power situation such as a campsite with hook-ups. The IP22 will power all of you 12v accessories when plugged in while also charging the house battery. The IP67 is essentially a souped-up trickle charger.
_________________
'85 Westfalia 1.9L
'72 BMW R75/5
'71 BMW R75/5
'02 Subaru Forester 2.5L
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Crooked Designer
Samba Member


Joined: March 22, 2018
Posts: 308
Location: Chicago, IL
Crooked Designer is offline 

PostPosted: Tue Jun 01, 2021 1:29 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

Vanuber wrote:
Crooked Designer wrote:
Any thoughts on which of these two IP22 is 30 amp and IP67 is 25 amp. May also get a small trickle charger for starter battery for storage in winter.


I highly recommend the IP22 over the IP67 if you will ever be in a shore power situation such as a campsite with hook-ups. The IP22 will power all of you 12v accessories when plugged in while also charging the house battery. The IP67 is essentially a souped-up trickle charger.


Excellent. Thanks for the advice. I count on being able to use shore power and charge at the same time. (probably because my 50ah lead acid battery isn't really up to the task of the truck fridge on cloudy days)
_________________
'85 Westy full camper, Subaru 2.5L, 5 speed SubiGears + 5speedbus shifter kit
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
ProspectiveOwnergon
Samba Member


Joined: May 22, 2020
Posts: 211
Location: SoCal
ProspectiveOwnergon is offline 

PostPosted: Fri Jun 11, 2021 11:30 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

120ah Grade a batteries "scheduled for delivery" tomorrow! Have my 10a dc power source ready, BMS is on it's way. Will check voltage, hook up to top balance per Will Prowse vid and then build with thin cutting boards between, 4 compression threaded rods and mount BMS. Gonna ge gooooood
Back to top
View user's profile Send private message Gallery Classifieds Feedback
ProspectiveOwnergon
Samba Member


Joined: May 22, 2020
Posts: 211
Location: SoCal
ProspectiveOwnergon is offline 

PostPosted: Sat Jun 12, 2021 1:03 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

Batteries all arrives, minor swell, nothung insane I think. All batteries identical at 3.293v.

Problem? They didn't ship the damn terminal bolts or bus bars!!

Opened top
Image may have been reduced in size. Click image to view fullscreen.


All four nicely packaged
Image may have been reduced in size. Click image to view fullscreen.


Some swell
Image may have been reduced in size. Click image to view fullscreen.


Voltage readout
Image may have been reduced in size. Click image to view fullscreen.


Interesting fusing of plastic sheeting to battery
Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
ohhorob
Samba Member


Joined: September 26, 2013
Posts: 212
Location: Santa Cruz
ohhorob is offline 

PostPosted: Sat Jun 12, 2021 2:44 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

ProspectiveOwnergon wrote:
Batteries all arrives, minor swell, nothung insane I think. All batteries identical at 3.293v.

Problem? They didn't ship the damn terminal bolts or bus bars!!



They're definitely the "Grade B" cells that are de-rated from their original capacity. I've been running mine on a backyard solar setup for a few months and one of the cells will trip the BMS over voltage protection when the charge is almost complete. (I haven't redone the top-balancing yet).

I used these set screws as terminal studs– https://www.mcmaster.com/92605A129 and these low-profile nuts– https://www.mcmaster.com/catalog/90710A038

That makes it easier to get a single careful torqued connection to the cell, and then feel comfortable tightening ring terminals or bus bars to that as often as needed without as much risk of stripping the cell threads.

I used the 3M VHB tape at the corners of the cells to form a battery pack. That leaves a small space for the bulge grow and shrink, but it might not be suitable for use in the van. The bus bars I got from the cell supplier had enough length to allow for the bulges too.. in case you make your own you should take that into account.
_________________
"Gundy" - '85 Westfalia
GoWesty 2300cc, Digijet
Back to top
View user's profile Send private message Gallery Classifieds Feedback
dobryan
Samba Member


Joined: March 24, 2006
Posts: 16473
Location: Brookeville, MD
dobryan is offline 

PostPosted: Sat Jun 12, 2021 3:13 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

That is reallly reallly serious swell. The 272ah set I got had nothing at all. My guess is those are trashed.
_________________
Dave O
'87 Westy w/ 2002 Subaru EJ25 and Peloquin TBD

"To travel hopefully is a better thing than to arrive." Robert Louis Stevenson

MD>Canada>AK>WA>OR>CA>AZ>UT>WY>SD
https://www.thesamba.com/vw/forum/viewtopic.php?t=620646

Building a bus for travel in Europe (euroBus)
https://www.thesamba.com/vw/forum/viewtopic.php?t=695371

The Western Syncro build
https://www.thesamba.com/vw/forum/viewtopic.php?t=746794
Back to top
View user's profile Send private message Gallery Classifieds Feedback
ProspectiveOwnergon
Samba Member


Joined: May 22, 2020
Posts: 211
Location: SoCal
ProspectiveOwnergon is offline 

PostPosted: Sat Jun 12, 2021 7:32 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

ohhorob wrote:


They're definitely the "Grade B" cells


Better frakkin not be! I paid $460 for these labeled as grade A from Ninthchit. QR codes are in tact and terminals are untouched.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Steve M.
Samba Member


Joined: July 30, 2013
Posts: 6798
Location: Fort Lauderdale, Fl.
Steve M. is offline 

PostPosted: Sat Jun 12, 2021 8:34 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

I saw this today in West Marine. A gel type cushion pad to insulate batteries from road shock.

Image may have been reduced in size. Click image to view fullscreen.


Image may have been reduced in size. Click image to view fullscreen.

_________________
This free advice is worth exactly what you paid for it.

There are seven days in a week. Someday is not one of them.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
rmcd
Samba Member


Joined: October 29, 2010
Posts: 1348
Location: PNW - its a dry rain.
rmcd is offline 

PostPosted: Sun Jun 13, 2021 9:37 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

If one were to believe this guy who has been doing this for a while….

https://www.youtube.com/watch?v=3U4ZfQ_IToI

Here is the supplier that seems to have the best supply.

https://www.aliexpress.com/item/1005001563505796.h...new_Detail

You need to insulate between the cells with some kind of plastic.

Top and bottom balance.

And constrain to control swelling.
_________________
VW LT40 build. Like a Vanagon but 30% larger in every direction and 40% slower even in metric.
https://www.thesamba.com/vw/forum/viewtopic.php?t=749359&highlight=
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
dobryan
Samba Member


Joined: March 24, 2006
Posts: 16473
Location: Brookeville, MD
dobryan is offline 

PostPosted: Sun Jun 13, 2021 10:11 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

rmcd wrote:


Top and bottom balance.



It is my understanding that you can top OR bottom balance. Not both. For our intended usage top balancing is more appropriate.
_________________
Dave O
'87 Westy w/ 2002 Subaru EJ25 and Peloquin TBD

"To travel hopefully is a better thing than to arrive." Robert Louis Stevenson

MD>Canada>AK>WA>OR>CA>AZ>UT>WY>SD
https://www.thesamba.com/vw/forum/viewtopic.php?t=620646

Building a bus for travel in Europe (euroBus)
https://www.thesamba.com/vw/forum/viewtopic.php?t=695371

The Western Syncro build
https://www.thesamba.com/vw/forum/viewtopic.php?t=746794
Back to top
View user's profile Send private message Gallery Classifieds Feedback
ProspectiveOwnergon
Samba Member


Joined: May 22, 2020
Posts: 211
Location: SoCal
ProspectiveOwnergon is offline 

PostPosted: Sun Jun 13, 2021 1:51 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

rmcd wrote:
If one were to believe this guy who has been doing this for a while….

https://www.youtube.com/watch?v=3U4ZfQ_IToI

Here is the supplier that seems to have the best supply.

https://www.aliexpress.com/item/1005001563505796.h...new_Detail

You need to insulate between the cells with some kind of plastic.

Top and bottom balance.

And constrain to control swelling.


Yup, plastic cutting boards already on their way, 10a variable power unit ready for top balancing only, batteries will be compressed. And have watched hours of Prowse. Smile

I wanted to stay at 120ah under driver seat, so the bigger 280 packs are serious overkill for me.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
bobbyblack Premium Member
Samba Member


Joined: May 21, 2015
Posts: 4332
Location: United States, Iowa
bobbyblack is offline 

PostPosted: Sun Jun 13, 2021 3:04 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

I don't know what they are called.. There is a type of cutting board that is very thin, like about the thickness of a cereal box cardboard or less.. maybe 0.7 mm or less and flexible. I don't know what it is called, seems like a good thing to use tho, so if anyone knows what that stuff is/was, perhaps it would be a good material for between cells?
_________________
'87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
rmcd
Samba Member


Joined: October 29, 2010
Posts: 1348
Location: PNW - its a dry rain.
rmcd is offline 

PostPosted: Sun Jun 13, 2021 4:45 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

dobryan wrote:
rmcd wrote:


Top and bottom balance.



It is my understanding that you can top OR bottom balance. Not both. For our intended usage top balancing is more appropriate.


Good point. I assumed both. Will report back when my batteries arrive.

Amazon “Flexible Plastic Cutting Board Mats set” for the separation material. Couple mils thick and about 10 bucks.
_________________
VW LT40 build. Like a Vanagon but 30% larger in every direction and 40% slower even in metric.
https://www.thesamba.com/vw/forum/viewtopic.php?t=749359&highlight=
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
fxr
Samba Member


Joined: December 07, 2014
Posts: 2300
Location: Bay area CA
fxr is offline 

PostPosted: Sun Jun 13, 2021 7:21 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

bobbyblack wrote:
I don't know what they are called.. There is a type of cutting board that is very thin, like about the thickness of a cereal box cardboard or less.. maybe 0.7 mm or less and flexible. I don't know what it is called, seems like a good thing to use tho, so if anyone knows what that stuff is/was, perhaps it would be a good material for between cells?

Bed Bath and Beyond have a set of four for ~$4.
_________________
Jim Crowther
1984 1.9l EJ22 Westy Wolfsburg Edition
Vespa GTS 300
Back to top
View user's profile Send private message Gallery Classifieds Feedback
OldSpice
Samba Member


Joined: June 10, 2015
Posts: 178
Location: 87 syncro westfalia Subaru ez30
OldSpice is offline 

PostPosted: Sun Jun 13, 2021 10:39 pm    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

Trying to figure out where to buy cells from- don’t really wanna wait months- is that my best option tho? Anyone else wanting to go in on some and split em
Up?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
dobryan
Samba Member


Joined: March 24, 2006
Posts: 16473
Location: Brookeville, MD
dobryan is offline 

PostPosted: Wed Jun 16, 2021 5:49 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

dobryan wrote:
Received my 272 ah LiFePO4 batteries about a month ago. Finally getting around to doing the top balance...

All cells were at 3.300 when received.


Image may have been reduced in size. Click image to view fullscreen.


And the top balance is complete. It took 16 days.


Image may have been reduced in size. Click image to view fullscreen.

_________________
Dave O
'87 Westy w/ 2002 Subaru EJ25 and Peloquin TBD

"To travel hopefully is a better thing than to arrive." Robert Louis Stevenson

MD>Canada>AK>WA>OR>CA>AZ>UT>WY>SD
https://www.thesamba.com/vw/forum/viewtopic.php?t=620646

Building a bus for travel in Europe (euroBus)
https://www.thesamba.com/vw/forum/viewtopic.php?t=695371

The Western Syncro build
https://www.thesamba.com/vw/forum/viewtopic.php?t=746794
Back to top
View user's profile Send private message Gallery Classifieds Feedback
shagginwagon83
Samba Member


Joined: February 07, 2016
Posts: 3786
Location: VA/TN
shagginwagon83 is offline 

PostPosted: Wed Jun 16, 2021 6:01 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

Awesome Dave! When installing the links/battery - be sure to clean the surfaces with alcohol.

I still have my 310aH cells to install. Dang engine conversion has taken too much camping time up this year.
_________________
Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
fxr
Samba Member


Joined: December 07, 2014
Posts: 2300
Location: Bay area CA
fxr is offline 

PostPosted: Wed Jun 16, 2021 8:56 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

shagginwagon83 wrote:
Awesome Dave! When installing the links/battery - be sure to clean the surfaces with alcohol.

I still have my 310aH cells to install. Dang engine conversion has taken too much camping time up this year.

My 310Ah cells haven't arrived after 50 days. The seller's website now says 'order complete'. Refund dispute started (again!!!).
_________________
Jim Crowther
1984 1.9l EJ22 Westy Wolfsburg Edition
Vespa GTS 300
Back to top
View user's profile Send private message Gallery Classifieds Feedback
dobryan
Samba Member


Joined: March 24, 2006
Posts: 16473
Location: Brookeville, MD
dobryan is offline 

PostPosted: Wed Jun 16, 2021 9:10 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

fxr wrote:
shagginwagon83 wrote:
Awesome Dave! When installing the links/battery - be sure to clean the surfaces with alcohol.

I still have my 310aH cells to install. Dang engine conversion has taken too much camping time up this year.

My 310Ah cells haven't arrived after 50 days. The seller's website now says 'order complete'. Refund dispute started (again!!!).


Kind of the same happened with my order. I contacted their rep via chat on their website and the rep said that the 'order complete' meant they had arrived in the US and were shipped out to me. She said wait a week for them to show up. They did.
_________________
Dave O
'87 Westy w/ 2002 Subaru EJ25 and Peloquin TBD

"To travel hopefully is a better thing than to arrive." Robert Louis Stevenson

MD>Canada>AK>WA>OR>CA>AZ>UT>WY>SD
https://www.thesamba.com/vw/forum/viewtopic.php?t=620646

Building a bus for travel in Europe (euroBus)
https://www.thesamba.com/vw/forum/viewtopic.php?t=695371

The Western Syncro build
https://www.thesamba.com/vw/forum/viewtopic.php?t=746794
Back to top
View user's profile Send private message Gallery Classifieds Feedback
fxr
Samba Member


Joined: December 07, 2014
Posts: 2300
Location: Bay area CA
fxr is offline 

PostPosted: Wed Jun 16, 2021 10:45 am    Post subject: Re: LiFePO4 Batteries: Discussion Thread Reply with quote

My problem is that my seller (Alex Chen, Shenzhen Basen Technology Co., Ltd.) doesn't reply to my 'chat' requests except with boiler-plate 'what product do you want?' type of auto-replies. No tracking number, nothing helpful in the slightest. Not happy, even more so because Mrs fxr is extremely unhappy with the situation, seeing as how this is now the second time cells have gone AWOL, and I get an earful every day asking where the batteries are. Evil or Very Mad
_________________
Jim Crowther
1984 1.9l EJ22 Westy Wolfsburg Edition
Vespa GTS 300
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Vanagon All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: Previous  1, 2, 3 ... 30, 31, 32 ... 43, 44, 45  Next
Jump to:
Page 31 of 45

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2023, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.