Freerails Home 
Home Search search Menu menu Not logged in - Login | Register

Freerails IS ACCEPTING new Members ... To join Freerails ... See how to Register as a Member in the 'Joining Freerails' Forum

Batteries For HO Scale GP9 ?
 Moderated by: W C Greene Page:  First Page Previous Page  1  2  3  Next Page Last Page  
New Topic Reply Printer Friendly
 Rating:  Rating
AuthorPost
 Posted: Thu Nov 2nd, 2017 11:10 pm
  PMQuoteReply
11th Post
Bob R
Registered


Joined: Thu Nov 20th, 2014
Location: Springfield , Nebraska USA
Posts: 441
Status: 
Offline
Geoff L wrote:
I was looking for a 2s lipo battery but am finding it difficult to source by size rather than capacity. In the alternative, the idea of switching cabooses has its attractions.

Geoff

Not difficult.  The standard method of numbering Lipo cells is the actual size.  I am using a lot of 250mah cells #402035 which translates to 4mm x 20mm x 35mm (H x W x L).  Round cells like Dan suggested 18500 is 18mm x 50mm.
I search a size number on ebay.  I am purchasing individual cells and soldering into a two cell pack adding a battery protection circuit board.  Very simple, safe and reliable.
Picture shows a 2S lipo with protection circuit and charge jack in bottom of one of my engines.  For size reference the mechanism is a Bachman HO Thomas the Trains Percy 040.

Attachment: 20170525_195200_resized (2).jpg (Downloaded 130 times)



____________________
Bob
Back To Top

 Posted: Fri Nov 3rd, 2017 02:39 am
  PMQuoteReply
12th Post
Geoff L
Registered
 

Joined: Tue Nov 4th, 2014
Location: Hemel Hempstead, United Kingdom
Posts: 44
Status: 
Offline
Thank you all for the further useful advice.

With my British stock - ex Lima diesels and various 0-6-0 and 0-4-2 tanks I am using 2s 450mAh batteries with DT Rx62-22 receivers. I have toyed with making up battery packs, but as it has been early days have tried to stick to factory assembled packs.

The main use will be shunting/switching but probably with only one or two locos live at a time, hence search for max battery power.

Geoff

Back To Top

 Posted: Fri Nov 3rd, 2017 04:19 am
  PMQuoteReply
13th Post
Rod Hutchinson
Registered


Joined: Fri May 8th, 2009
Location: Mooroolbark, Australia
Posts: 395
Status: 
Offline
My 2S battery materials designed to fit into a trailing wagon for HOn30 size.  Battery is setup with 3rd terminal for balanced charging.

R/C components.  L-R bottom, Polyswitch Fuse, Switch to isolate RX from battery, Pololu 9v step up, Deltang RX 6x.xx, circuit board



____________________
Rod Hutchinson
Mooroolbark, Australia
Back To Top

 Posted: Fri Nov 3rd, 2017 01:20 pm
  PMQuoteReply
14th Post
William M
Registered


Joined: Wed Jan 7th, 2015
Location:  (Up The Road From Stratford-Upon-Avon), United Kingdom
Posts: 85
Status: 
Offline
Google aDverts for 9v PP3 of 800 milliamps batteries rechargeable via a USB . 
You can obtain the correct lead for charging as well. Worth a look. They also have a 400 milliamp PP3 USB  rechargeable.
Might do the job....Prices vary quite a bit from seller to seller  see here also.
https://www.aliexpress.com/popular/usb-battery-rechargeable.html

Last edited on Fri Nov 3rd, 2017 01:33 pm by William M



____________________
Back To Top

 Posted: Fri Nov 3rd, 2017 02:45 pm
  PMQuoteReply
15th Post
Helmut
Registered


Joined: Sun Feb 17th, 2013
Location: Friedberg, Germany
Posts: 1079
Status: 
Offline
Those 6F22 cells are far too clumsy for most of the H0 and smaller scale models. They use  the same stepup technique as mentioned here. The price is much higher, though. A combo of a 1S Lipo and a Pololu ( or whatever ) 9V-stepup may be easier to fit and lead to the same results at less costs.



____________________
Regards, H.
Back To Top

 Posted: Fri Nov 3rd, 2017 10:10 pm
  PMQuoteReply
16th Post
Si.
Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 4695
Status: 
Offline
Just a comment ...

... which many people don't actually know.



The PP3 typical 9-Volt battery ...

... is in fact a packaged 'stack' of 6x small 1.5-Volt cells.



Not sure about what cells would be used in the 'package' for a re-chargeable PP3 ?

But it would be a 'stack' of smaller ones for sure.



:!:



Si.



____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Sat Nov 4th, 2017 12:28 am
  PMQuoteReply
17th Post
dan3192
Registered
 

Joined: Thu Oct 14th, 2010
Location: Connecticut USA
Posts: 224
Status: 
Online
Check Helmut's link, sent earlier today...

...the Okcell by Banggood - two LiPo cells with a protection board, tested on YouTube, about 2.9Wh (9V x 322mAh).

https://www.youtube.com/watch?v=CR3l82x88xg

Dan


Last edited on Sat Nov 4th, 2017 04:01 am by dan3192

Back To Top

 Posted: Wed Nov 8th, 2017 09:13 pm
  PMQuoteReply
18th Post
Geoff L
Registered
 

Joined: Tue Nov 4th, 2014
Location: Hemel Hempstead, United Kingdom
Posts: 44
Status: 
Offline
Hi All

Thank you for the further advice. I have updated my Mynis Cule Magna post with details of some recent stock running tests and added further pictures to the link showing my rebuilt controller, two of my converted locos and some views of the layout under construction.

Regards

Geoff

Back To Top

 Posted: Sun Apr 29th, 2018 06:30 pm
  PMQuoteReply
19th Post
d10ng
Registered
 

Joined: Thu Jul 19th, 2012
Location: Lichfield, United Kingdom
Posts: 55
Status: 
Offline
Geoff, Not sure if you're still looking, but I run these in my p2k GP9. Overland 550mah 1s lipo plus 9v pololu. Gives about 3 hours moderate workload. 

Attachment: IMG_20180429_182654.jpg (Downloaded 52 times)



____________________
Thanks for your time
Dave

Visit my Modelling Blog http://dlmr.wordpress.com/
Back To Top

 Posted: Sun Apr 29th, 2018 11:19 pm
  PMQuoteReply
20th Post
Geoff L
Registered
 

Joined: Tue Nov 4th, 2014
Location: Hemel Hempstead, United Kingdom
Posts: 44
Status: 
Offline
Thanks, Dave.

Quite coincidentally I had got around to converting the loco this evening and have it running, albeit not very fast, although that should not be a problem.
I sourced some Turnigy nano-tech 2s 300mAh batteries that fit a treat in the long hood without any structural alterations to the loco, just removing the DCC decoder and motor connections and tying off the wires from the pick-ups. I left the pick-ups in place as it seems they might double as bearings for the axle ends. Receiver is a DT Rx 62-22.
It looks possible that a second battery could possibly be fitted in the short hood.
Presently, the light tubes for the lights and number boards have been removed and I am pondering a way to fit LEDs to replace the original bulbs.

Geoff

Back To Top


 Current time is 06:45 pm
Page:  First Page Previous Page  1  2  3  Next Page Last Page  

Top



UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems