PTrider Posted January 21, 2016 Posted January 21, 2016 The old version of the IPS F400: http://www.electricunicycleonline.com/ips-f400-16-inch-self-balancing-electric-scooter-400wh-electric-unicycle.html Had 400wh battery. I assume thats 3 packs of 1p16s 132wh giving a true total of 396wh. The newer version of the IPS F400: http://www.wheelgo.com/product/new-ips-111-white/ Has 260wh battery. Thats possibly 2p16s or two 1p16s packs of 132wh giving a true total of 264wh. Now looking at the unicycles on the outside they look identical. So what Im wondering is if inside the new IPS 132 there is actualy enough space to add another battery pack of 132wh or 174wh 1p16s??
esaj Posted January 21, 2016 Posted January 21, 2016 40 minutes ago, PTrider said: The old version of the IPS F400: http://www.electricunicycleonline.com/ips-f400-16-inch-self-balancing-electric-scooter-400wh-electric-unicycle.html Had 400wh battery. I assume thats 3 packs of 1p16s 132wh giving a true total of 396wh. The newer version of the IPS F400: http://www.wheelgo.com/product/new-ips-111-white/ Has 260wh battery. Thats possibly 2p16s or two 1p16s packs of 132wh giving a true total of 264wh. Now looking at the unicycles on the outside they look identical. So what Im wondering is if inside the new IPS 132 there is actualy enough space to add another battery pack of 132wh or 174wh 1p16s?? Do note this in the electricunicycleonline -page: Charger: 50.4V/2V The latter part is probably supposed to be 2A, not 2V, but anyway, as you can see (and I remember reading here in the forums maybe last spring), earlier IPSs actually didn't use 16S but 50.4V / 4.2V per cell = 12S packs (the 50.4V is the charging voltage, so calculated with cell max voltage), so 12 * 3.7V = 44.4V nominal. To get 400Wh out of that the total capacity needs to be: P = U*I <=> I = P / U => 400Wh / 44.4V = around 9Ah Divided to 3 packs, that would mean around 3Ah (3000mAh) cells, so it could very well have been 3 packs (largest 18650-cells are around 3.5Ah, at least now), but they would have been smaller than the 16S packs (physically), if they indeed were 18650-cells. They could have been also using higher capacity LiPo -packs or some other form factor than 18650...
Jason McNeil Posted January 21, 2016 Posted January 21, 2016 @PTrider, the original F111 had a big 400Wh Li-Po pack (actually it was composed of dozens of small cell-phone type batteries) & was severely under-powered, capable of only 7A sustained power & 50.4v. The 132 had the same styling as the F111 but as you said with the 2p16s configuration. IPS retained the original F111 name, despite it containing a completely different battery-pack/motor/control-board, when first produced, then changed it to the 132; a couple months later rebranded a different 14" Wheel to the 132 just to confuse everyone! It's a pretty good Wheel, I've have one customer who has been riding his 20miles every day for over a year & the range is nearly just as much as as new.
PTrider Posted January 22, 2016 Author Posted January 22, 2016 Thank you for your replies. @Jason McNeil I noticed you opened an IPS132: http://forum.electricunicycle.org/topic/1145-16-motor-tear-down-individual-component-weigh-in/#comment-11297 Did you get the impression that there would be space to add another battery pack or there would be not enough space?
Jason McNeil Posted January 22, 2016 Posted January 22, 2016 For this shell design, both sides are fully occupied with the battery pack & control-board, 32 cell is the max.
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