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Swapping SLA batteries?(7 posts)

Swapping SLA batteries?spdplay
Nov 16, 2001 4:28 AM
I recently purchased a set of BLT Explorer lights and they came with an SLA battery. These lights have a 6w and a 15w bulb. The run time on the 15w bulb by itself is only 1.5hrs (claimed by Norco). I noticed similar wattage lights offered by companies like nightrider can last MUCH longer with similar sryle batteries.
What are my options for swapping my battery for a "better" one? Also, any advice on "smart" chargers and can i get one for my lights?
re: watts / volts = amperageAkirasho
Nov 16, 2001 1:09 PM
If your wattage and voltage remain constants, you'd need a "larger" battery (more amp/hour)

If your system operates on 12 volts, it would require 1.2 amps to operate. If you've got a 2aH battery, you'd net about 1.7 hour run time... theoretically.

If your system operates on 6 volts, it would require 2.5 amps to operate. If you've got a 3.75 aH battery, you'd net about 1.5 hour run time... theoretically.

Real world variables would limit the actual run times but this gives you a ballpark idea...

The downside is the size of the battery... I run a homemade 55 watt bulb at 12 volts from a 9aH battery... it's relatively heavy but effective.

I don't know if BLT offers larger capacity batteries... but you could wire up your own at the risk of voiding your warranty.

As far as chargers are concerned, do a GOOGLE search either under batteries or battery chargers... you should find some options.

...pic of size comparison for larger batteries.

http://home.talkcity.com/DharmaDr/gaigin/compare01.jpg

...pic of battery mounted to handlebar of 'Dale Super V... battery rests atop the stem/steerer interface.

http://home.talkcity.com/DharmaDr/gaigin/SuperVmountweb01.jpg

http://home.talkcity.com/DharmaDr/gaigin/SuperVmountweb03.jpg

We abide.

Remain In Light.
Home made bulb?Kerry Irons
Nov 17, 2001 2:27 PM
Who are you really? Thomas A. Edison is long dead, and he's the only guy I can remember who made is own light bulbs. ;)
Kerry, you shouldn't be surprisedBirddog
Nov 17, 2001 9:38 PM
haven't you noticed how he always says "remain in light" That should have been a major clue!
re: Swapping SLA batteries?Birddog
Nov 16, 2001 9:30 PM
I just went through the replacement battery deal and here is what I found out. I opted for an SLA battery to replace my NiCad. A replacement at the battery store cost me $21. and another $7 for a nylon case that I used to mount it in. You do not need a smart charger for lead acid batteries, a simple trickle charger works fine. You also don't have to worry about the "memory effect" that you do with NiCads, or the reverse cell syndrome that I produced by discharging my batteries to avoid the "memory effect". My literature failed to point this out. If you are worried about overcharging, buy a simple timer for your charger, they cost $10 or less. My new battery is a 6 volt 7 Amp Hr model and so far it seems to run my 12 volt light for about 2 to 2.5 hours. I'm not sure about run time because I haven't had it long and haven't tested it thoroughly. I went this route (SLA) because it was far cheaper than buying NiCads and far more reliable and easier to use. The weight penalty is minimal.
Battery Store?spdplayr
Nov 18, 2001 4:23 PM
Hey thanks Birddog! Great tip! But what kind of store did you get your battery from? A hobby store? Any help is greatly appreciated.
Battery Store?Birddog
Nov 18, 2001 7:21 PM
In OKC it is just called The Battery Store. Most cities of any size have a store that specializes in various batteries. I think the one I bought is made to power the emergency lights in hospitals and nursing homes during a power failure. Just look in the yellow pages under batteries and you'll probably find something. Good Luck