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Just received 8 of these cells, looking quite nice, and extremely well packaged. Have not tested anything, they all show 3.26v - my old meter has only 2 decimal places . Production date is August this year. Just for the looks, what do you think of them?

Hi! Were you able to make it work? I haven't bought them (yet) given your thoughts, but the diagram to make it works seems quite easy with an Arduino (I'll try to dig it). My idea is to have a log / graph crossing temperature, SOC and pressure in a spring loaded "case". That would be used as...

Some photos...

Thanks for your time to reply. Appreciated! Regards

Hi! Is this for stationery application or mobile? Because if mobile, given the cell's weight, I believe rubbing due to vibration could lead to PEX's failure

Do you have any info on the kind of rubber shock isolators or vibration frequencies? For me, this makes a lot of sense, but I don't have any data to make a plan in order to mitigate this problem.

About the rods used in these battery "cases", should they be stainless steel or zinc plated steel is perfectly OK? Asking as there is a huge price difference (6x) between them... (In any case, they will be enclosed in rubber tubing) Thanks in advance for all opinions!

Notice that the upper half has the correct dents to allow the terminals

My 2 cents... I think that you are not taking into account that Grade B are more prone to runaway, hence rendering the pack unusable/ less usable / reliable

Hi! I'm about to join this journey, just undecided on BMS: either Seplos with native can comms or a JK due to active balancing. Reliability and price are the top factors. After this time, do you maintain your preference with JDB and JK? I'll go with the RPi and Venus OS (working in IT / *nix...

Curious choice. Which thickness?

Search for a very recent YouTube video on some flex panels starting to burn on the top of an RV. In a previous RV, mine were glued. In the next one, alu supports will be glued, and panels will be attached to the alu frames (roof is not flat)

Actually, EVE's diagram shows 6 compression rods, not 4

IIRC Victron MP II is 3kVA, not 3kW, which means less wattage, hence, less amps. That is shown on the datasheet at the different temperatures...

NKON also have v3

It's not just the BMS sense wires that have to be extended, also two thick cables have to go through the seat bases, in a place where there is a lot of walking, which may require some thinking

Have to have a backup is not reassuring... Though I bought JK-B2A8S20P-H last week... let's see how it goes...

Thanks for sharing! Why not reading the values through Louis's drivers to a RPi with Venus OS installed? Pretty interface, cheap(ish), accessible from www Regards!

Another case I've been looking into, but haver no personal experience. (I'm also after a case for 8s2p - 2x 24v packs, with space for 2 BMSs - or 2p8s) https://m.alibaba.com/product/1600593903876/Luyuan-Battery-Box-Case-set-for.html

Thanks!!

Hi! I'm having a hard time getting a decent breaker. What have you used? Thanks in advance