On front drive bikes, I use an inexpensive front aluminum rack that attaches to the brake bosses and bottom the head tube (fender mount). On the down tube, use the water bottle lugs and zip ties. Done right, there is no vibration or danger of the batteries coming off even during a spill. A slit is cut in the Plexiglas base that catches the batteries spring loaded locking tab. Two "L" shaped rails of copper or stainless steel are riveted and bolted to the Plexiglas to make electrical contact when the battery is in place. "T" shaped Plexiglas rails are glued then riveted to the base so the batteries can slide snugly into place. They usually buy 4, 5.0ah to get decent range.Ĭonstruction of battery mounting bus is pretty simple although tolerances must be tight. Some buyers prefer Genuine Makita batteries. The 36V have slots for 4 batteries (2p2s), but most owners buy and use only 2, 10.5ah batteries. The 54V use three 18v batteries in series. Carrying a couple small spare batteries also a nice option. The flexibility of moving one set of batteries between several bikes (tandem, road, trail) and a host of great tools is invaluable. The cost per wh is much less than half what most pay for a "traditional" ebike battery. 2, 15 cell batteries give 10.5ah at 36V and can support 30A continuous discharge with very little voltage sag. I tried several, and the LG MJ1 cell is a great choice. If those 15 cell cases are filled with with a top quality cells instead, you get a high rate, high capacity battery perfect for ebikes. The results in a inexpensive decent performing tool battery, sightly bigger. The 15 cell case allows them to use lower rate, cheaper, Chinese cells since the current is shared by 3 cells not 2. In addition to standard cases for 10 cells(5s2p) they build a taller case that holds 15(5s3p). I use a supplier in China that builds quality batteries to fit Makita and other brand tools. I've spent the the summer with wife, RV, and ebikes touring. I can make a few extra mounts and I have some 10.5ah batteries, I anyone is interested, pm.Ĭlick to expand.Sorry for the long delay in answering. It seem most think tool batteries are not for serious ebikers. I've previously posted pictures of custom builds using these batteries and buses and usually get flamed. I've used used this system for the last 3 years thousand of miles on singles and tandems with only one battery failure. The batteries charge off the bike in an hour or so on inexpensive Makita chargers. 3 batteries 10.5ah batteries is 25% smaller, 15% lighter, 39% more watt hours than the OEM Izip battery. I use high quality batteries built with 15 LG MJ1 cells (10.5ah), but the genuine Makita or very inexpensive clones will work as well. The LED voltmeter on each battery gives a quick check to help prevent that error. Since 3 are in wired in series, it is important that all 3 be in the same state of charge. I use a Watt meter which displays volts,amps,watts and keeps a true record of ah and wh consumed. As with any aftermarket battery, the BMS will not report the battery charge state to the display, but voltage based capacity displays are not acceptable to me anyway. It doesn't, but the current is reduced 15% at the 20 mph top speed so the range using 3, 10.5 ah batteries is nearly double the OEM battery. I'd hoped for increased top speed using throttle mode. The Izip and all 48v bikes I've tested work fine (better) at the higher voltage. Since Makitas are actually 18v (5*3.6v), 3 in series is 54V. The mount fits nicely in the Izip's battery slot. Rather than replacing the 48v8.7ah (really 46.8v) battery, I built a simple tool mount for 3 Makita mount batteries. Nice bike, bad battery, very cheap price. I bought a 2014 Izip E3 Dash last weekend. Reason? Battery failure and owner's not willing spend $700 for another proprietary battery that will likely fail much sooner than advertised. I find quality ebikes being dumped for a few dollars on Craigslist.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |