Cyclists: What are your preferred battery pack solutions?

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JaredM
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Cyclists: What are your preferred battery pack solutions?

Since spring will be here before I can be ready for it, I’m gearing up the bike (Canyon Grail AL 2×11) for commute and bike-packing adventures this year. As a true BLFer, I’m putting together ideas for the whole lighting situation. What this post is about is battery pack solutions. I’m realizing there just really isn’t a way to get that much capacity/energy securely and compactly strapped to my handlebars, nor do I like any non essential weight in that area either. I have a few Yinding lights that are fine stock, but are inevitably going to get some HiCRI emitters. I’m also going to build some custom, low output mules (maybe a small fresnel) as “ground effect” lighting that’ll illuminate things directly below me (from the crank to the front axle). What this means is that I’m going to need a decent sized pack, mounted somewhere on the front half of the frame.

I’ve thought about this on and off for a few days, and have a bunch of different ideas, but curious what might be out there. I know I should probably join MTBR for this kind of topic, but giving this a shot here..

Paths I could go down are:
Build my own pack from new cells, tab welded and with balance leads for connection to my hobby charger
Tool pack converters
Pre-made packs
Cell carriers/power banks

Features that I think would be nice and/or necessary. Again, I could DIY, but life and ADHD usually keeps anything complex from ever getting done..

Waterproof and reasonably impact resistant (rock strikes/crashes)
USB output
Good BMS (aka ANY form of BMS)
Bike friendly packaging (bottle cage mounting?)
Secure but convenient to remove

Edited by: JaredM on 02/22/2020 - 23:50
Johm
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JaredM
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Thanks Johm! I haven’t seen the 6 cell round version yet. I like the format.

I have an old 2S/2P (4cell) design actually already. Unfortunately I wasn’t happy with it and it needed so much modding to handle my needs that I have started to look for other options. Biggest issues were waterproofing and crappy springs. I could bypass the upper ones, but the lower board was glued in Tired On the output side, the wires were also very thin and definitely not up to the calling for 5-10A that I use on “kill-mode” – aka speeds above 30-35mph or off-road descents.

Keep the ideas coming Beer

angerdan
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The Kaidomain KBP series of battery packs are pretty good. I’ve been using their six cell pack for a couple years now. Decent sized wire, good waterproofing and a nice case with long lasting velcro.

High cri in little lights can be a bit of a problem. The emitters are less efficient so they run hotter and put out less light. If you modify the sense resistor to make up for the lost output you can start running into overheating problems and your battery run-time is reduced.