motomech
10 MW
First off, this is not a high capacity(for it's size), work of art battery like Nader builds;
https://www.electricbike.com/mini-hub-motors/
But a battery to serve as a back-up in case I run my main pack flat.
It starts w/ a Stanley single wall water bottle and a Topeak "Java" bottle holder;
https://www.amazon.com/gp/product/B018XNYXEE/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B004NQ94EK/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
And the heart of the matter', I went w/ 4) Multistar 3S/3000mAh "high-capacity" bricks that will be configured 12S/1P, or the 4 in series to get 12S/3000 mAh;
View attachment 6
They are very small, but the problem w/ using larger "bricks" of LiPoly, is their length. For example, to fit the 2 6S/5000 mAh bricks I use on my 2WD, I use a 300 m/m long container;
But since I don't need lot of capacity, I choose not to lengthen the Stanley bottle and use these.
(A note on capacity-Nader, I'm sure he uses round cells, probably Li-Ion to get his 5000 mAh capacity. 1200 mAh LiPoly cells could be stacked 4 tiers high to get 12S to 14S/4800 mAh, but it would require a bottle 75 m/m X 250 m/m. The Stanley bottle is 75 X 200.)
Next I replaced the XT60's w/ 4 m/m bullets. I don't solder them on, but use a torch to melt the solder into the receptical cups and push the bare wire in.
The plastic shields can be a bear to get on and I heat them gently w/ a lighter around the area where is a ridge inside and push like Hell against a hard surface to get them to "snap" on. It helps to place a bare connector inside the one you are working on to get in to go all the way in.
Next I install the 3S + 3S to 6S balance adaptors. It's really important to get the direction right or the wires will melt.
Note that the red balance wire is w/ the red power wire and the blk. is w/ the blk.;
Then 3 of the little bricks go in the bottom and one on top. Lot's of room for the wires and connectors;
And there is an plastic X reinforcement in the spout of the cap that I jammed 2 bullets into;
This battery is not wired into the system. When I need it, I pull my charger connections out of the main pack pouch and plug them in(After disconnecting the main pack, I wouldn't want to parallel the 2 packs);
The bottle weighs about 3 pounds and combined w/ the 10.4 Ah in the frame bag, gives a total of 13.4 Ah.s.
https://www.electricbike.com/mini-hub-motors/
But a battery to serve as a back-up in case I run my main pack flat.
It starts w/ a Stanley single wall water bottle and a Topeak "Java" bottle holder;
https://www.amazon.com/gp/product/B018XNYXEE/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B004NQ94EK/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
And the heart of the matter', I went w/ 4) Multistar 3S/3000mAh "high-capacity" bricks that will be configured 12S/1P, or the 4 in series to get 12S/3000 mAh;
View attachment 6
They are very small, but the problem w/ using larger "bricks" of LiPoly, is their length. For example, to fit the 2 6S/5000 mAh bricks I use on my 2WD, I use a 300 m/m long container;
But since I don't need lot of capacity, I choose not to lengthen the Stanley bottle and use these.
(A note on capacity-Nader, I'm sure he uses round cells, probably Li-Ion to get his 5000 mAh capacity. 1200 mAh LiPoly cells could be stacked 4 tiers high to get 12S to 14S/4800 mAh, but it would require a bottle 75 m/m X 250 m/m. The Stanley bottle is 75 X 200.)
Next I replaced the XT60's w/ 4 m/m bullets. I don't solder them on, but use a torch to melt the solder into the receptical cups and push the bare wire in.
The plastic shields can be a bear to get on and I heat them gently w/ a lighter around the area where is a ridge inside and push like Hell against a hard surface to get them to "snap" on. It helps to place a bare connector inside the one you are working on to get in to go all the way in.
Next I install the 3S + 3S to 6S balance adaptors. It's really important to get the direction right or the wires will melt.
Note that the red balance wire is w/ the red power wire and the blk. is w/ the blk.;
Then 3 of the little bricks go in the bottom and one on top. Lot's of room for the wires and connectors;
And there is an plastic X reinforcement in the spout of the cap that I jammed 2 bullets into;
This battery is not wired into the system. When I need it, I pull my charger connections out of the main pack pouch and plug them in(After disconnecting the main pack, I wouldn't want to parallel the 2 packs);
The bottle weighs about 3 pounds and combined w/ the 10.4 Ah in the frame bag, gives a total of 13.4 Ah.s.