SegwayChat
Home . Photos . Old Gallery

Go Back   SegwayChat > Segway Forums > Segway General Discussion

Notices

Segway General Discussion General discussion related to any model of Segways, miniPROs, or Ninebots. Please do not post non-Segway technology posts here; use the technology forum instead.

Reply
 
Thread Tools Display Modes
Old 06-18-2019, 08:17 PM   #1
mattk
Member
mattk is an unknown quantity at this point
 
Join Date: Jul 2003
Location: Boston, Massachusetts, United States
Posts: 712
5 yr Member
Default NiMH Rebuild?

Anyone here done a NiMH rebuild? I have some ancient batteries from '01 (they literally have the ACROS code name on them) that I'd like to take a stab at rebuilding but would love any advice.

Also have a set of Lithiums that were "rebuilt" by MTO, but only throw red lights.
__________________
-MattK
mattk is offline   Reply With Quote
Old 06-23-2019, 07:35 PM   #2
shmonoff
Junior Member
shmonoff is on a distinguished road
 
Join Date: May 2019
Location: Charlotte, NC
Posts: 17
Default

https://youtu.be/kAdzSqDfChc
Don't open the case like he did though
shmonoff is offline   Reply With Quote
Old 06-24-2019, 07:01 PM   #3
dorrington
Member
dorrington is on a distinguished road
 
Join Date: Jan 2016
Location: uk
Posts: 119
3 yr Member
Default

Often with the nimh batteries the chemicals will corrode the bms board.

some repairs can be made but they start to conduct internally along the vias inside then pcb.. and eventaully fail,...so even with new cells it won't work.

I have new boards just waiting to be built and tested...as I use nickel cells alot I don't want to be without.

However, it is often just the cells that are unservicable..

best...
dorrington is offline   Reply With Quote
Old 07-11-2019, 04:01 PM   #4
iwik
New Member
iwik is on a distinguished road
 
Join Date: Jul 2019
Location: New Zealand
Posts: 9
Default

Hi Dorrington,
Im about to rebuild a NimH pack. What are you using to glue batteries. Epoxy
or Hot glue or what. Any advice appreciated.
Thanks
Les
iwik is offline   Reply With Quote
Old 07-17-2019, 01:18 PM   #5
iwik
New Member
iwik is on a distinguished road
 
Join Date: Jul 2019
Location: New Zealand
Posts: 9
Default

Hi Dorrington,
What glue do you use to stick battery packs together?. In the originals it looked like some kind of epoxy.
Thanks
Les
iwik is offline   Reply With Quote
Old 07-20-2019, 02:22 PM   #6
dorrington
Member
dorrington is on a distinguished road
 
Join Date: Jan 2016
Location: uk
Posts: 119
3 yr Member
Default

Hi Les,

I usually tape around the packs of ten just to hold them together.

I use polyeurethene re-enterable potting compund (just enough to cover the bottom of the cells 1/4" or so).

seems to work for me...
dorrington is offline   Reply With Quote
Old 07-20-2019, 02:27 PM   #7
dorrington
Member
dorrington is on a distinguished road
 
Join Date: Jan 2016
Location: uk
Posts: 119
3 yr Member
Default

....And to re-seal the lids I use Sikafkex 221...and a soapy wet finger to finish the seal....
dorrington is offline   Reply With Quote
Old 07-20-2019, 03:20 PM   #8
iwik
New Member
iwik is on a distinguished road
 
Join Date: Jul 2019
Location: New Zealand
Posts: 9
Default

Hi Dorrington,
Thanks for that. The compound you use is this just smeared on the bottom of
the 10 pack to make them solid.
I was considering using Araldite. As the machine will cause considerable vibration i wanted to make sure these cells will not move.
What are you using to cement the 10 packs to the cases?.
How long have you been using your method for? Have you encountered any
problems with you rebuilds done this way.
Sorry for all the questions but are about to start.

Have you come up with a sensible priced replacement for the L/H grip. Or know of a reasonably priced replacement. For
a Gen 1 unit.
Thanks
Regards
Les

Last edited by iwik; 07-20-2019 at 03:33 PM..
iwik is offline   Reply With Quote
Old 07-20-2019, 04:15 PM   #9
dorrington
Member
dorrington is on a distinguished road
 
Join Date: Jan 2016
Location: uk
Posts: 119
3 yr Member
Default

Hi Les.

I pour in the re-enterable encapsulation compound until the bottom 1/4 inch or more is covererd.

this holds everything real tight but still lets the cells expand if required as they heat up.

Also if you need to you can dig the cells out

I use this.

https://www.elichem.co.uk/image/cata...data_sheet.pdf
dorrington is offline   Reply With Quote
Old 07-20-2019, 08:29 PM   #10
iwik
New Member
iwik is on a distinguished road
 
Join Date: Jul 2019
Location: New Zealand
Posts: 9
Default

Hi Dorrington,
Very much appreciate your comments. Just to recap your procedure is
1. Wrap the wired 10 packs with tape and drop the 12 into the case.
2. Pour in the potting mix so you have about a 1/4" covering the packs.

Have you welded your connections or soldered?.
Thanks again
Regards
Les
iwik is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 10:56 PM.
Copyright 2002-2019 SegwayChat.org.
All rights reserved. Not affiliated with Segway Inc.

FreshBlue vBulletin skin by
VayaDesign
Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SegwayChat Archive