Thank you.
https://batteryhookup.com/products/new-3-2v-25ah-lifepo4-topband-navitas-prismatic
I just did the math. These cells are 1-18" thick. 2-3/4" wide and 7-1/8" high.
Not counting a box to hold them perfectly the width and height will not change and total length stacked up vertically will be 1.125 * 12 = 13.5" That is a nice compact pack. Due to their dimensions no space is wasted like round cylinder cells. Also with both terminals on the top the bottom will set down in the box perfect. All is needed for the top is a lid with small hinges and could add a lock.
The BMS can be mounted under the lid as long as the wires are long enough to open it and an insert is added so the cells can not move in case you want to lay the pack on its side as will only be 2-3/4" high instead of 7-1/2".
Basically mounting options will be versatile. NOT an engineering nightmare like LTOs and cylinder LIFE cells are. :lol:
Also 680 grams is 1.499 pounds so 1.5 * 12 = 18 pounds so the maximum weight with nuts and bus bars should be < 21 pounds assembled.
Basically that is exactly what I am looking for in a battery pack. If only I were smart enough to notice those cells before I spent $600+ for those LTOs and $280+ for the 80 - 3.28 Ah LIFE cells. I could have built a 20S , 16S and a 12S pack with those cells.
They do not come with busbars but can order them here.
https://www.alibaba.com/product-detail/M6-Busbar-Screw-Bus-Bar-Battery_1600211960031.html
About 8 days and will order my first 12. After testing the first 12S pack I might still build a 16S and 20S pack.
12/26/21
When I walk my mind seems to go into overdrive thinking.
I finally have a good answer for a really stupid thing I did awhile back. It is about the 13S power modules. I watched a video and the guy removed the balance boards to install a BMS. DA. said I could have run them with the balance boards and would have been ok without a BMS.
I felt very foolish for doing such a dumb thing.
That is up until now.
Since I have a 12S - LIFEPO4 pack and am building a second for > 20 mile usable range , and also building a 20S - LIFEPO4 pack for all my 48V needs that leaves me with the HARO V3 and the 60V controller and 3,000W - 60V motor.
Yes. I will be ordering my own BMS for the 13S power modules but will be a 16S - 100 amp Bluetooth BMS.
I will also need to order two. One for each power module. I could use one as they will be in parallel but I am going with two identical 100 amp - BMSs.
I will need two 3S - 4P packs with the same Panasonic cells that are in the power modules or cells with the same specifications or close enough to work.
I am NOT soldering or spot welding any batteries so the 3S - 4P packs must be built so it will be easy to unhook the 3S - BMSs and use the wires to go to the 16S - BMSs.
I am hoping DA will let me know. The Haro V3 will be my only e bike I will be running with Lion - 18650 cells. It will be a clean build. No wood at all and the controllers will fit inside a factory built triangle bag just like I plan on doing with the Giant Roam.
Both the Haro and Giant will have a rear factory rack for the batteries.
The Haro will have a small black wire front basket as well that they sell at Wall-Mart. It will have a 10S - 8P Lion pack for a front Bafang motor. (the motor which is now on the 26" dual suspension.) This will increase the range of the Haro to > 30 miles as can use the front motor on the flat and the rear 3 kilowatt motor for up hills and when a top speed is desired.
12/27/21 - 2:05 AM. I am inserting this. I did a video of the next 3 new builds I have planned. I will be turning over a new leaf for my New Years resolution. No more crappy builds. No wood . No Vice grips on the axle nuts and no more milk crates for baskets
https://www.youtube.com/watch?v=Sy89V5PQMsE
I will be housing the controller / controllers in factory ordered triangle bags. Batteries will go on a rear rack or factory made black wire small front basket. Also new stickers will be ordered for the Giant Cypress Hybrid. All three bikes will be clean professional builds. I also have a 20" vintage Diamondback Viper. #4 GOOD BUILD. It will get a 1,500W rear direct drive 48V hub motor. I plan on getting a 2,000W - geared hub motor for the 700c Giant Cypress Hybrid that needs the new stickers.
The Cypress Hybrid and 20" Viper is not happening any time soon. Looking at a year or two down the road. The Giant Roam and Haro V3 will happen this winter and should both be running by spring or summer.
12/27/12:20 AM.
I own 13 total motors for e bikes. 9 are 36V. Eight are currently running ; 5 being 36V motors. The two 36V chain drives and the two e bikeling motors will be running soon though. The two DD hubs and 1,800W brushless motor are 48V and the only one 60V motor is the 3 kilowatt brushless motor. Therefore I will be building the 12S prismatic LIFE pack first. The SLAs are way too heavy and only running a few cycles with them. I need 30+ Ah for 36V. 20+ miles of range.
Then after that.
https://www.amazon.com/ECO-WORTHY-Monocrystalline-Complete-Off-Grid-Controller/dp/B07K233GT8/?tag=earthtechling-best-solar-panel-kits-20
I own one 225 cold cranking amp lawn mower battery. It is about 33 Ah. Two more will be 99 Ah + the 3 - SLAs which are 66 AH will give me 165 Ah of 12V storage. That is minimum to start. I can add batteries. 33 Ah lawn mower batteries are like $24 at Wall Mart. I could jump start cars also if I had to. Maybe make $10. :lol:
To keep the solar storage batteries healthy I need a way to set the voltage so they stay above 85% of a full charge. Not sure how to do that. I wont be using my 15 amp 54.6V 900 watt charger. Just the 10 amp 43.6V LIFEPO4 charger. The other chargers will all be < 5 amps. Also on separate timers so wont all be drawing current at the same time.
Even though I will never solder another battery I still will need to solder wires sometimes. The fumes are not good in my apartment so should also be able to have a small soldering station in the van to plug in the Weller soldering iron.
I am looking into a solar panel kit. After I set all that up I will then order the 16S - Bluetooth BMS for the power modules and the two 3S - 4P packs to hook up to the BMS.
That should give me plenty of time to find two 3S - 4P lion packs to hook in series with the power modules. If DA knows if they exist please let me know. Also if anyone knows of a better solar kit for around the same price ( $200) please let me know.
Thanks.
LC. out.