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That's Zefal Z Box. As for the configuration, I think 5 in each row would fit without issues. Maybe 6 + 4... But actually it might be better just to measure and print the bottle yourself

When I've done some calculations, it seemed that you can very easily make a small bottle with 10x teslas, which will clear basically any shock you want to use... why not go this route?

These are Liitokala cells, so yes, aliexpress basically. And I agree about the volume - however nothing else will fit in that shape with higher capacity...you either have to make something ugly like TEC or a smaller battery. I have limited space in my backpack, so carrying only one relatively...

I've also made a new version of a pack, but moved in a bit different direction - is has basically the same capacity as internal battery (20 * 5000 MAh 21700 cells). Had to be really precise with dimensions this time, and in the end even shaved 1-2 mm from the bottom to clear the shock. This...

Afaik battery voltage drops during heavy use. For example, after approx 20km when my DIY battery packs shuts down on trail mode, I can just power it back again and ride for a couple of km on eco

Glad to know there are no problems - but I still believe below 10c is not an optimal temperature for battery storage. Not saying it is bad, just maybe not ideal for battery and shortens it's lifespan

thanks, Steve. That's actually the exact routine I do as well :) In addition, I also do not store the bike in garage when it is cold -> always bring it indoors... guess batteries do not like being exposed to low temperatures for long time

I've got a premium version, running perfectly with e8000 on my Focus Jam 2 now. Was thinking - it would be nice to have 2 eco settings: one with the very low assist (like for gravel roads), another one with medium (like the usual eco mode) and the third one like the trail. So ideally it...

Just wondering what was the mileage on the internal battery and storage conditions that it died just in two years. I've got focus 2018, battery still seems to be pretty good. Asking this partly to understand how to prolong battery life. So far each ride I always use external battery pack...

How about writing to German focus support?it might be expensive to ship battery overseas, but still cheaper than the new bike though

To be honest, from time to time I also get the idea to build the pack from 10 21700. Just for the fun of it, below is how it would compare to my current one. Quite cute, I think :) Regarding the test, I did not make it myself, but here is the excerpt from some YouTube video where a reviewer...

Just wondering, would silicone spraying be effective in this case? Did you use generic spray, like this one (for cars)?

For using only 10 cells I'd consider the ones below. According to test, they actually provide the same current as 20 lg's I use in my pack, and I had no problems running the pack in boost mode with extreme loads. Each one weights 70g though

To bump this thread: today I have pulled apart protective cover on my focus jam2 motor and noticed there was some moisture gathering. Not a big deal, as I was literally riding is melting snow/swamp/deep water puddles, and when motor gets hot I expect these will evaporate... But still decided to...

If somebody can take the internal battery out (as as whole, with BMS board) and then connect DIY pack this will clear things up a bit. But I guess then the display won't boot - it displays status of internal battery, and afaik you have to have some charge in it for TEC to work; so maybe the same...

So then when the internal battery dies, you can just throw it away and ride with the TEC pack, having the same weight it total... And ugly looks :) Wonder if it is possible to repack TEC with the new batteries though.

You mean internal battery, right? Just wondering: if say you just remove the internal battery and connect diy pack, will it work? In this case, you can actually make custom battery in place of internal one when it is completely dead. For TEC you have to have some charge in internal I guess, but...

as far as I know lithium batteries are quite susceptible to shock... so unless I'm very sure that this thing can hold at least 1.3 kg of dynamic weight, I would be quite cautious - this thing might snap. And the point of boa in Fidlock system is that it can easily be snapped of because of used...

Well, if it is a challenge that you want, only you can decide which works best for you :) For me it was really important that the battery could be easily dismounted and placed in a pouch -> which is then thrown in a backpack without any wired meddling around. Maybe it is a placebo, but I've...

Yeah, it is 7, 7, 6 configuration, with round bms taking the slot of the 7th cell on top level - so that all fits in 24 cm... it could be a bit less: the magnetic rosenberger I use at the top takes around 3 cm itself. If you just put the cable through (and make it non-disconnectable), you'll...