iscmatt
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| posted on 7/11/08 at 12:31 AM |
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Lost the charger for my cycle lights :(
I'm just getting back into the biking scene and have dug out my old lights
CLICKY
Only thing is the charger has gone awol!! Obviously the instructions for the lights says dont use any other adapter than the one supplied - but i dont
have it anymore!
The spec for the 'lost' adapter is Input: 230v/110v - Output: 7.5V 500MA
This is the battery: CLICKY
Is it worth contacting the company to see if the can send me a new charger?
Though I have a couple of chargers for other items but not with that exact spec -
1. input 240v at 50Hz - output: 7.5v 300ma - this one also has a polarity switch - what does that do??
2. input 240v at 50Hz - output 7.5v 1200ma
would either of the above work? If i found one with correlating figures to the original spec would that work?
or would need to purchase something like this? would it work?!?!
CLICKY
to add;
It seems that the battery may be useless after reading about not letting lead acid batteries sit doing nothing - which is exactly what mine has been
doing for about 4 years!! Though i switch it on and its very bright, though that may not last??
Obviously i will see how these lights go first and see what you guys reckon about the chargers!! if its a case of buying the new cheap charger thats
fine! see how it goes. Though if the light does not last long;
Perhaps i may have to look into buying a new battery and charger - how about these from maplins. i think they would be suitable?
CLICKY
CLICKY
Thanks for reading all this - i'm trying to speak my mind as to avoid confusing myself!!
Not really sure if anyone will find this question easy to answer or answerable at all! but hey ho! The lights are brill and i want to still be able to
use them!
Thanks!!!
[Edited on 7/11/08 by iscmatt]
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blakep82
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| posted on 7/11/08 at 12:35 AM |
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i *think* power supply 2 should be fine. its that right voltage, and the liughts should draw whatever current they need to charge.
sure someone will correct me though 
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Mark G
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| posted on 7/11/08 at 12:58 AM |
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I've got the exact same lights and charger sat downstairs on the chair waiting for me to charge up for my bike (Also rescued from winter a few
years ago). Small world!
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iscmatt
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| posted on 7/11/08 at 01:09 AM |
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quote:
Originally posted by Mark G
I've got the exact same lights and charger sat downstairs on the chair waiting for me to charge up for my bike (Also rescued from winter a few
years ago). Small world!
Indeed! can you confirm what the figures are on your charger? do they match the spec i gave?
cheers!!
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maartenromijn
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| posted on 7/11/08 at 07:42 AM |
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I agree with Blakep82, however I think you can use either one of the chargers. Option 1 will charge slower, option 2 will charge quicker.
IIRC you need to divide the 4.5A by the charging current to get the charging time in hours: 4.5A/1200mA=3.75 hours.
Anyway, just try. What can go wrong with this HUGE battery?? Why not try to do it locost before spending big bucks?
BLOG: http://thunderroad-super7.blogspot.com/
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02GF74
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| posted on 7/11/08 at 07:51 AM |
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quote:
Originally posted by iscmatt
The spec for the 'lost' adapter is Input: 230v/110v - Output: 7.5V 500MA
Though I have a couple of chargers for other items but not with that exact spec -
1. input 240v at 50Hz - output: 7.5v 300ma - this one also has a polarity switch - what does that do??
2. input 240v at 50Hz - output 7.5v 1200ma
would either of the above work? If i found one with correlating figures to the original spec would that work?
I've got those but mine a about 5 years old andthe silvering on the lamps is beginning to go so not as good as they used to be. At the time,
they were good value but I guess LED lamps are the new black.
The battery is a 6 V lead acid cell. Small LA batteris like that are used for UPS so it may be not too upset about being left unused for a length of
time. Mine is still going strong despite it not being used for aoubt 8 months of the year.
Either of those power suplies will work - the current is the max. value they can supply and will determine how lon it takes to charge the battery. As
the battery charges, it will draw less current. with the higher output one, check the battery does not get too hot.
The polarity switch is to set the voltage polarity - there will be a cylindrical plug on the end of the charger, the outer is usually negatvie and the
inside contact is positive; the switch will reverse that.
Ensure that the positive from the charger goes to the + terminal on the battery.
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Mark G
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| posted on 7/11/08 at 08:01 AM |
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Charger spec
Ever Glow Ac Adaptor
Model : DCC080050
Input : 240v ~ 50 Hz
Output : 8Vdc 500mA
Battery Spec
PL4-6
6V 4.5Ah
Top cover reads
Battery:BP-502
Sealed lead-acid rechargeable battery 6v 4.5A
Charge time 8 - 10 hours
Fuse 5A 250V \6.3
Adapter:7.5v 500MA
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iscmatt
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| posted on 7/11/08 at 09:33 PM |
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quote:
Originally posted by maartenromijn
I agree with Blakep82, however I think you can use either one of the chargers. Option 1 will charge slower, option 2 will charge quicker.
IIRC you need to divide the 4.5A by the charging current to get the charging time in hours: 4.5A/1200mA=3.75 hours.
Anyway, just try. What can go wrong with this HUGE battery?? Why not try to do it locost before spending big bucks?
So with the 300mA charger it would theoretically take 15hrs!!
The battery is pretty big, but delivers!!! As long as i can charge it 
----
Thanks for the replies guys, most helpful as usual! I'll give it a blast with all your advice and see how it goes!
Cheers!!
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MikeRJ
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| posted on 7/11/08 at 10:15 PM |
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The current rating is the value they can supply continuously at the rated voltage, not the maximum amount of current they can supply! A 300mA adapter
would overheat if asked to supply 500mA for any length of time.
Does the lamp include the charging circuit? If the original charging circuit was built into the adapter, don't use an alternative.
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