Converting a Cat Eye Opticube
#1
Senior Member
Thread Starter
Join Date: Mar 2005
Location: South Florida
Posts: 726
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
Converting a Cat Eye Opticube
I have a Cat Eye HL-EL 300. It uses 4 AA batteries. Can I use a sealed wet cell battery instead of the 4 AAs?
The wet cell is rechargeable and is 6V 4.5 AH. Would this battery be too much for the led electronics?
Thanks,
Bob
The wet cell is rechargeable and is 6V 4.5 AH. Would this battery be too much for the led electronics?
Thanks,
Bob
#2
Señior Member
Join Date: Sep 2005
Location: Michigan
Posts: 13,749
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 446 Post(s)
Likes: 0
Liked 8 Times
in
7 Posts
Shouldn't matter at all. If it can take 4 AA NiMHs, it knows how to regulate current, because 4 NiMH AAs are fully capable of dumping enough current into that sucker to light it on fire. If it can handle that, it can handle a 6V SLA battery.
__________________
Work: the 8 hours that separates bike rides.
Work: the 8 hours that separates bike rides.
#3
CarFree Commuter
Join Date: Nov 2009
Location: Carrollton, Texas
Posts: 31
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
6 Volts is 6 Volts. As long as the voltage is compatible, should be fine. The only issue with using different battery technology is when the device has some "smart power management" capability. The worst that can happen in this case is the device might shut down due to sensing "low battery capacity" before the "different" battery is truly exhausted. Generally a small annoyance if it occurs at all.
dennyd
#4
Senior Member
Join Date: Jul 2008
Location: Austin, TX
Posts: 3,040
Bikes: Bacchetta Giro, Strada
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Yes, but it's not quite that simple.
A 6v SLA battery will actually put out about 6.6 or so volts when fully charged. Four alkaline AA cells will start at 6.0 volts and go down from there. (Four NiMH AA cells will start at about 5.6 volts and go down from there, just to cover all the bases, even though 4 x 1.2 volts is 4.8 volts -- NiMH and NiCd cells start at 1.4 volts fully charged, even though people call them 1.2 volt batteries.)
It's likely that the SLA battery will be just fine -- 6.6 volts is pretty close to 6.0 volts -- but the voltages aren't exactly the same.
Actually, there is one other possible problem. It's possible that the light puts the batteries into parallel and works off of 3 volts instead of 6 volts. Or perhaps it leaves them in series to get 6 volts, but also connects to the batteries somewhere else so it can get 3 volts. This is unlikely, but it's certainly possible. I've got one of these lights, but don't quite remember what the wiring inside looked like.
A 6v SLA battery will actually put out about 6.6 or so volts when fully charged. Four alkaline AA cells will start at 6.0 volts and go down from there. (Four NiMH AA cells will start at about 5.6 volts and go down from there, just to cover all the bases, even though 4 x 1.2 volts is 4.8 volts -- NiMH and NiCd cells start at 1.4 volts fully charged, even though people call them 1.2 volt batteries.)
It's likely that the SLA battery will be just fine -- 6.6 volts is pretty close to 6.0 volts -- but the voltages aren't exactly the same.
Actually, there is one other possible problem. It's possible that the light puts the batteries into parallel and works off of 3 volts instead of 6 volts. Or perhaps it leaves them in series to get 6 volts, but also connects to the batteries somewhere else so it can get 3 volts. This is unlikely, but it's certainly possible. I've got one of these lights, but don't quite remember what the wiring inside looked like.
Last edited by dougmc; 12-09-09 at 01:13 PM.
Thread
Thread Starter
Forum
Replies
Last Post
rapattack
Electronics, Lighting, & Gadgets
28
05-17-15 11:38 PM
Spld cyclist
Electronics, Lighting, & Gadgets
3
11-28-11 04:10 PM
datlas
Electronics, Lighting, & Gadgets
39
09-30-10 08:42 AM
Don in Austin
Electronics, Lighting, & Gadgets
13
12-13-09 11:53 AM