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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.

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

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