Battery-Operated Headlight and Taillight

Dirty30 Dillon /

I am in the middle of building a bike that utilizes an ignition-only inner coil and I am trying to get some inspiration for running small LED Head and Tail lights off of a "total-loss" battery system.

Finding the lights themselves are not difficult, but I am wondering if anyone has any ideas for battery choices, whether it is Li-Po, LiFe-PO4, NiMH or NiCd.

I basically need 7-10 amp-hours so I can run a 15-25 W LED and a MINISCULE rear LED marker light, for like an hour tops. Basically trrying to get a small amount of dark riding in on a race bike just to blast around the city.

Re: Battery-Operated Headlight and Taillight

i.m.o. cordless drill is the way to go here. buy a cheap used flashlight for whatever brand of battery you use around the shop, chop off the flashlight portion and just use the plastic termal/disconnect part at the bottom.

i did some math using the 5.0 AH m18 milwaukee shit i use at home, it would run LED head and tail lights for a really long time.

i did a bunch of research into this a couple years ago and in the end nothing made as much sense for a total loss system.

Re: Battery-Operated Headlight and Taillight

> Graham Motzing Wrote:

> -------------------------------------------------------

> i.m.o. cordless drill is the way to go here. buy a cheap used

> flashlight for whatever brand of battery you use around the shop, chop

> off the flashlight portion and just use the plastic termal/disconnect

> part at the bottom.

>

> i did some math using the 5.0 AH m18 milwaukee shit i use at home, it

> would run LED head and tail lights for a really long time.

>

> i did a bunch of research into this a couple years ago and in the end

> nothing made as much sense for a total loss system.

You can get cheap USB adaptors to work with a lot of cordless tool batteries. I got one off Amazon that works with my Dewalt stuff.

Re: Battery-Operated Headlight and Taillight

You might consider :

https://www.ebay.com/i/392228236200?chn=ps&var=661166120787

Pretty hard to beat the price or the space requirements .

Re: Battery-Operated Headlight and Taillight

I did the same thing. I bought this utility light on Amazon - it puts out plenty of light, has a high low beam, an emergency lights mode (red and blue flashing lights) and lets you charge your phone off it. It's rechargeable and lasts about 6 hours or so on 3 hour charge. I removed the base and the width allows me to bolt in to the headlight brackets just fine.

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IMG_0977.jpg

https://www.amazon.com/dp/B07D7TBVKB/

Chomp.

Re: Battery-Operated Headlight and Taillight

kevin Smellaflange /

nice ideas...usb ports, i hadn't thought of that, ...good one

Re: Battery-Operated Headlight and Taillight

Dirty30 Dillon /

Yeah, I agree the cycle life of drill Batts are very advantageous.

@gator that worklight is actually a really smart idea.

My biggest concern is I want to keep the system 12V DC so I can potentially power other items of the circuit, low draw stuff like TT comps as well as a pump on a switch (should my thermosiphon not be as effective as I need.

I'm gonna see what Ridgid offers in 12v as I already have some Ridgid tooling

Re: Battery-Operated Headlight and Taillight

Cristian Luna /

I run this as a back up headlight on my Derbi it’s crazy bright 3 light modes and has a external battery that I just attached to my fork leg

https://www.amazon.com/dp/B00NHFT9S4/

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Re: Battery-Operated Headlight and Taillight

from my experience with e-bikes:

To keep weight to a minimum, damn the cost: LiPo

Fairly light weight and low lifetime cost: LiFePO4

Most tolerant of abuse and of not terrible weight: NiMH

Decent abuse tolerance and lowest lifetime cost: NiCd

Lowest upfront cost but shitty in every other respect: PbH2SO4

My longest-ranged e-bike ran a 100-pound bank of lead-acid batteries, while my most fun e-bike had a NiMH trunk back. for lights sans traction needs, I'd go with NiMH or NiCd. (edited)

Re: Battery-Operated Headlight and Taillight

Charles Cole (OFMC) /

Without a doubt the new led lights are awesome, however the battery packs are too small, at least on the ones I've seen, to go for much distance. But the good batteries, that are available, are small enough that they can be hidden or made fairly incognito, in a usable pack for a longer distance. There's lots of room under a Tomos seat to bunch them up or a small box/pack within the rack or between the fork tubes. Lots of room for creativity.

Re: Battery-Operated Headlight and Taillight

Dirty30 Dillon /

This is going on a Grande, so underseat is where I will be keeping the battery, but I am going to have the radiator, overflow/res tank, and maybe water pump to worry about as well, so I want to hide what I can

Re: Battery-Operated Headlight and Taillight

You could use this battery from Treats, I keep it under my Streetmate's seat where the lead acid battery used to go, it's a bit less than 1/2 the size and 1/4 the weight of the original:

https://www.treatland.tv/trail-tech-sealed-12V-battery-pack-p/trail-tech-battery-040-batt3.7.htm

I use this to charge it at home:

https://www.all-battery.com/nimpackcharger_01025.aspx

And there's loads of different shapes and sizes of 12v packs here for less money/Ah than the trailtech:

https://www.all-battery.com/12vnimhnicdbatterypackseries.aspx

Only thing to watch out with NiMH packs is you have to recharge them if they've been sitting unused for a long time, but I guess that's true of li-ion as well. Unlike li-ion you don't have to worry so much about running them flat. (edited)

Re: Battery-Operated Headlight and Taillight

Another option I've done to a bicycle, is get a rechargeable spotlight from harbor freight, pull the guts out and stuff it into a headlight, and then you have a million candlewatt headlight that lasts for a long time. Plug the charger in once in awhile, and you're good.

My bike can sit for months, and still have bright lights for hours.

Re: Battery-Operated Headlight and Taillight

> Lia the Raven Wrote:

> -------------------------------------------------------

> You could use this battery from Treats, I keep it under my Streetmate's

> seat where the lead acid battery used to go, it's a bit less than 1/2

> the size and 1/4 the weight of the original:

>

> https://www.treatland.tv/trail-tech-sealed-12V-battery-pack-p/trail-tech-battery-040-batt3.7.htm

>

> I use this to charge it at home:

>

> https://www.all-battery.com/nimpackcharger_01025.aspx

>

> And there's loads of different shapes and sizes of 12v packs here for

> less money/Ah than the trailtech:

>

> https://www.all-battery.com/12vnimhnicdbatterypackseries.aspx

>

> Only thing to watch out with NiMH packs is you have to recharge them if

> they've been sitting unused for a long time, but I guess that's true of

> li-ion as well. Unlike li-ion you don't have to worry so much about

> running them flat.

Thanks,Lia! I just bought this one from Amazon. 17.99 and free shipping!

https://www.all-battery.com/nimpackcharger_01025.aspx (edited)

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