Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-10-11, 07:00 AM   #1
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
magicshine battery replacement

Has anyone had success finding a battery replacement for the Magicshine 900? I don't want to solder on a new connector if possible. More capacity would be nice, but not necessary. Would like to keep the price ~$50. I know GeoMan is working on replacements.. but I'm getting tired of waiting.
chandltp is offline   Reply With Quote
Old 02-10-11, 07:15 AM   #2
malux
Senior Member
 
Join Date: Sep 2009
Location: Winter Garden, FL
Bikes: 2008 Trek 2.1
Posts: 179
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How long of a runtime do you need? I built a DIY NIMH that gives me about 1-1.5 hours. It's not voltage regulated so there is some fading. I was thinking of doing a side-by-side time lapse of my DIY battery vs the battery that comes with the magicshine.

let me know if you're interested, I can put something together.

That said, I think you will need to do some soldering, but it'll be pretty simple.
malux is offline   Reply With Quote
Old 02-10-11, 09:09 AM   #3
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
I would actually like to increase my run-time over the stock MagicShine battery, which was about 3 hours. If I could get twice that I'd be extremely happy. I can do the soldering, but I'd prefer to get everything all assembled and tested.
chandltp is offline   Reply With Quote
Old 02-10-11, 03:06 PM   #4
ItsJustMe
Seņior Member
 
ItsJustMe's Avatar
 
Join Date: Sep 2005
Location: Michigan
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Posts: 13,352
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 198 Post(s)
I bought one of these and soldered on a connector cut from a magicshine extension cable:
http://www.all-battery.com/li-ion186...bareleads.aspx

It's $72, sorry. I bought mine when they were on sale for something like $28 a year ago. Given that it's twice as big as the pack MS charges $45 or so for, it's actually not a bad deal.

For about the same price, there's this:
http://www.all-battery.com/Li-Ion186...BearLeads.aspx
or this:
http://www.all-battery.com/flatli-io...onnectors.aspx

The shape is different but it's got decent capacity.
__________________
Work: the 8 hours that separates bike rides.
ItsJustMe is offline   Reply With Quote
Old 02-11-11, 07:11 AM   #5
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by ItsJustMe View Post
I bought one of these and soldered on a connector cut from a magicshine extension cable:
http://www.all-battery.com/li-ion186...bareleads.aspx
I like the twice the capacity part.. what did you do to waterproof it after you soldered on the connector? Also, are you using the magicshine charger with it?

Where did you get less than 10 though? The link you posted has a minimum order of 10, or did that change too?
chandltp is offline   Reply With Quote
Old 02-11-11, 08:07 AM   #6
Richard Cranium
Senior Member
 
Richard Cranium's Avatar
 
Join Date: Jun 2002
Location: Deep in the Shawnee Forest
Bikes: LeMond - Gunnar
Posts: 2,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
It's $72, sorry. I bought mine when they were on sale for something like $28 a year ago. Given that it's twice as big as the pack MS charges $45 or so for, it's actually not a bad deal.
I kind of doubt it. And battery space has minimum order of "10 count."

If you bought an eight cell battery pack for $28, some one selling it made a serious mistake. (maybe it was NiCad)
Richard Cranium is offline   Reply With Quote
Old 02-11-11, 12:23 PM   #7
Leisesturm
Senior Member
 
Join Date: Jul 2005
Bikes:
Posts: 2,629
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 327 Post(s)
I bought a 4800mah batterypack (standard MS is 4400) from batteryspace.com with smartcharger for $76.00. Pack alone would come in around $50. Powerconnector on the pack is two pin but included is a two pin to MagicShine standard adapter. Powerizer threatened to charge an additional $25 haz-mat fee but never did. YMMV.

H
Leisesturm is offline   Reply With Quote
Old 02-11-11, 01:22 PM   #8
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Once you put the magicshine connector on a battery pack, as long as it's the 7.4v, can you use the magicshine charger? I was liking the look of this one.
chandltp is offline   Reply With Quote
Old 02-11-11, 01:26 PM   #9
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Or would I be better getting a regulated battery pack like this?
chandltp is offline   Reply With Quote
Old 02-11-11, 03:12 PM   #10
malux
Senior Member
 
Join Date: Sep 2009
Location: Winter Garden, FL
Bikes: 2008 Trek 2.1
Posts: 179
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm going to run a test this weekend to see how long the MS runs on the Gemini battery. I'll post graphs when I have them. that might be an option that would work.

By the way, have you thought of just using a battery holder with NIMH batteries? That would allow you to switch batteries on the go.
malux is offline   Reply With Quote
Old 02-11-11, 03:57 PM   #11
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by malux View Post
By the way, have you thought of just using a battery holder with NIMH batteries? That would allow you to switch batteries on the go.
I've thought about it. Wasn't sure about being able to get enough capacity. Also, I ride in a lot of inclement weather, so even in my trunk bag, it needs to be waterproof. I suppose a bag could fix that.. but it certainly would make changing batteries less convenient.
chandltp is offline   Reply With Quote
Old 02-11-11, 10:01 PM   #12
akansaskid
Freddin' it
 
Join Date: Jul 2008
Location: Wichita
Bikes:
Posts: 783
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by malux View Post
I'm going to run a test this weekend to see how long the MS runs on the Gemini battery. I'll post graphs when I have them. that might be an option that would work.
My MS light runs 3:15 on high using a Gemini battery in 30-40 deg weather. It's been a while since my MS batteries were fresh enough to be useful, but 2:45 sticks in my head for similar cool-weather conditions when they were new. I've used about 60-65% advertised run-time as my metric for most batteries I've used considering most of my night-time miles are in the cold when the sun sets early.
akansaskid is offline   Reply With Quote
Old 02-12-11, 01:48 AM   #13
DannoXYZ 
Senior Member
 
DannoXYZ's Avatar
 
Join Date: Jul 2005
Location: Saratoga, CA
Bikes:
Posts: 11,606
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by chandltp View Post
Or would I be better getting a regulated battery pack like this?
Both the ones you listed are regulated. This second one is a better replacement because it has a female plug that fits right into the MS light. No cutting or soldering needed. It doesn't have the outer covering that clicks together to form a water-tight seal though, but mechanically and electronically, they are compatible DC plugs. Also works with the MS charger.

DannoXYZ is offline   Reply With Quote
Old 02-12-11, 05:33 AM   #14
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by DannoXYZ View Post
Both the ones you listed are regulated. This second one is a better replacement because it has a female plug that fits right into the MS light. No cutting or soldering needed.
Any thoughts on moving up to one of the bigger batteries (10 ah) for more capacity? Right now I'm thinking 2 of the smallish batteries is better in case I have a batter failure.
chandltp is offline   Reply With Quote
Old 02-12-11, 01:25 PM   #15
DannoXYZ 
Senior Member
 
DannoXYZ's Avatar
 
Join Date: Jul 2005
Location: Saratoga, CA
Bikes:
Posts: 11,606
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by chandltp View Post
Any thoughts on moving up to one of the bigger batteries (10 ah) for more capacity? Right now I'm thinking 2 of the smallish batteries is better in case I have a batter failure.
Sure, you can have two packs and use a switch to flip between them.
DannoXYZ is offline   Reply With Quote
Old 02-12-11, 02:28 PM   #16
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by DannoXYZ View Post
Sure, you can have two packs and use a switch to flip between them.
I hadn't even considered that.. i really like it.
chandltp is offline   Reply With Quote
Old 02-12-11, 07:43 PM   #17
malux
Senior Member
 
Join Date: Sep 2009
Location: Winter Garden, FL
Bikes: 2008 Trek 2.1
Posts: 179
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hey guys, i ran a test this weekend with both batteries, here's a graph of the results. If you want to read more the down and dirty data, you can look here.

malux is offline   Reply With Quote
Old 02-14-11, 12:30 PM   #18
ItsJustMe
Seņior Member
 
ItsJustMe's Avatar
 
Join Date: Sep 2005
Location: Michigan
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Posts: 13,352
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 198 Post(s)
Sorry, I didn't notice the "quantity 10" thing there. A bunch of people here bought the 8 cell Tenergy packs when they were on sale. I don't rightly remember the exact price, could be $28 or $35, I don't think it was more than that. I think it was < $40 with shipping.

It's been running like a champ ever since.

As far as waterproofing, It was not waterproof to start with. I peeled back the shrink wrap, soldered on the new connector, wrapped it with black electrical tape, then put it into the corner of a heavy grade plastic bag, put 3 zip-ties tightly around the bag and wire, then cut the bag off above the ties. I think it's pretty water-tight at this point. I've ridden in heavy downpours without trouble. Of course, I bought a waterproof pannier a few months ago so that doesn't matter to me anymore.
__________________
Work: the 8 hours that separates bike rides.
ItsJustMe is offline   Reply With Quote
Old 03-31-11, 07:23 AM   #19
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
I know it's been a while since I asked this question, but my MagicShine battery pack is toast (yes, I was still using it). It just won't hold a charge.

Instead of shelling out $50 for a replacement, I was thinking about building one.

Would this holder work for a replacement (once I put the end on, of course)? I have the 18650 batteries for my light I bought to use as a replacement / backup for the MagicShine.
chandltp is offline   Reply With Quote
Old 03-31-11, 07:51 AM   #20
colleen c
I am a caffine girl
 
colleen c's Avatar
 
Join Date: Nov 2009
Location: Bay Area
Bikes: 2012 Stumpjumper FSR Comp...2010 Scott CR1 CF...2007 Novara FS Float2.0...2009 Specialized Hardrock Disc...2009 Schwinn Le Tour GSr
Posts: 1,815
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by chandltp View Post
I know it's been a while since I asked this question, but my MagicShine battery pack is toast (yes, I was still using it). It just won't hold a charge.

Instead of shelling out $50 for a replacement, I was thinking about building one.

Would this holder work for a replacement (once I put the end on, of course)? I have the 18650 batteries for my light I bought to use as a replacement / backup for the MagicShine.
That holder should work. However it looks like the under voltage on the PCB needs to be reset after you installed battery. That being said, if a cell jiggle loose or you try to swap with fresh battery while out riding, the pack may need to be reset with a charger. I also think that you might have to reset it if you are planning to remove the cell out of the holder and charging the cell with an external charger bay.
Quote:
After insert battery(ies), must connect to charger to enable the pcb. Otherwise, you will get "no" output from pcb!

Last edited by colleen c; 03-31-11 at 07:55 AM.
colleen c is offline   Reply With Quote
Old 03-31-11, 09:26 AM   #21
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by colleen c View Post
That holder should work. However it looks like the under voltage on the PCB needs to be reset after you installed battery. That being said, if a cell jiggle loose or you try to swap with fresh battery while out riding, the pack may need to be reset with a charger. I also think that you might have to reset it if you are planning to remove the cell out of the holder and charging the cell with an external charger bay.
Crud.. that puts a kink in my plans. I wonder if I should just look for one that holds a bunch of NiMh AAs. But all of these would have the PCB I would imagine. The idea of the PCB is to keep from killing individual cells, right?
chandltp is offline   Reply With Quote
Old 03-31-11, 09:53 AM   #22
colleen c
I am a caffine girl
 
colleen c's Avatar
 
Join Date: Nov 2009
Location: Bay Area
Bikes: 2012 Stumpjumper FSR Comp...2010 Scott CR1 CF...2007 Novara FS Float2.0...2009 Specialized Hardrock Disc...2009 Schwinn Le Tour GSr
Posts: 1,815
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by chandltp View Post
Crud.. that puts a kink in my plans. I wonder if I should just look for one that holds a bunch of NiMh AAs. But all of these would have the PCB I would imagine. The idea of the PCB is to keep from killing individual cells, right?
That PCB keeps it protected from over discharge, shorts, hi current draw and over discharge during charging. It was meant to be use on non protected cell. If you have protected cell, then a non battery holder pack will be better like this one. I've never used one but another member in another post had pictures of it. You can configure it with jumpers.

If you are going to use 4 cells, try to keep the same rating on each cell with the same manufactor and same chemistry. Otherwise you will have misbalance problems during discharge. Less of an issue during recharge if you charge them individually.
colleen c is offline   Reply With Quote
Old 03-31-11, 06:33 PM   #23
Richard Cranium
Senior Member
 
Richard Cranium's Avatar
 
Join Date: Jun 2002
Location: Deep in the Shawnee Forest
Bikes: LeMond - Gunnar
Posts: 2,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Really - if you need a standard value battery - there's little value in doing it yourself.

And building battery packs with extra cells will always end with a pack with less over all efficiency.

Bottom line, use "regular battery packs." The only reason I built "AA" packs was because I can use them successfully for "all night" Magic Shine tail light power as well as "back up" head lights.
Richard Cranium is offline   Reply With Quote
Old 04-01-11, 05:58 AM   #24
chandltp
Senior Member
Thread Starter
 
chandltp's Avatar
 
Join Date: Dec 2009
Location: Erie, PA
Bikes: Bacchetta Giro 20, Trek 7000, old Huffy MTB, and a few others
Posts: 1,763
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Quote:
Originally Posted by Richard Cranium View Post
The only reason I built "AA" packs was because I can use them successfully for "all night" Magic Shine tail light power as well as "back up" head lights.
That's my goal. I want to have a battery pack that I can add run time for little cost (extra batteries), but I want the MagicShine output. Maybe I'm asking the wrong question. Maybe I should be looking for a AA or 18650 powered light that has the equivalent output to the MagicShine. Or maybe I should give up on this quest and just bite the bullet and get a dyno hub for my primary bike.
chandltp is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 04:21 PM.