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  1. R

    Safe minimum voltage for "52v" 20ah pack?

    Today I finally did a ride that got me down to 2 bars on a BBS02 750 watt display. I'm running a Lunacycle 52v 20ah Panasonic (ncrb I think) battery pack in order to get a lot of mileage and longevity. I went with the older cell setup since with that amp/hr rating I'm not pushing the pack at...
  2. R

    How to add USB charging from 53v battery pack?

    Been banging this idea around a bit and I'm at a loss. I have a BBS02 kit mounted on my mountain bike with a ton of lights that take usb style chargers. I have a couple of Anker 60watt 6 port chargers that will do 2.5 amps per port and they are tiny and they are relatively light. About the...
  3. R

    Panasonic 18650B 3400mah

    Amazing what a couple of years can do... when I got into the lipo game with 18650 cells for my flashlights the Trustfire (don't laugh) flame 2400 were the best bang (hope not) for the buck cell out there. The Tesla Roadster was being built with 2200mah Panasonics. The Tesla S is being built...
  4. R

    Let's go old school... Lead Acid EV care and feeding advise?

    I'm wondering if the W4K from Ecity Power would be a good solution for my 72v 130ah flooded lead acid pack in my NEV (And still be a good solution when converted to LiPo or LiFePo4).. http://www.ecitypower.com/pdf/w4k.pdf No idea what it costs... checked out some of the chargers they list...
  5. R

    Tacoma Electric Vehicle Association meetings

    Figured it was about time I added an invitation to our monthly meetings for anyone wishing to attend. The Tacoma Electric Vehicle Association meets up the first Wednesday of each month at the King Oscar Restaurant on Hosmer. Meet and greet starts at 6pm, business starts at 7pm. Pretty...
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    NEV battery pack... replace 72v 200amp with...?

    Picking up a 2007 Revolution R1 electric car on Wednesday. It has the original 72v lead acid battery pack (6ea. 12v 200ah batteries... I think they are advertised as 200ah... it still gets around 30 miles range with hills). From switching my bikes from lead to LiFePo4 Headways, I know there is...
  7. R

    BMS and Charger questions

    I see a lot of people are using the Signalab V2.5 BMS. apparently sourcing them from Ping. I don't see him listing them on his website separately... are some of you buying just them to replace the Headway BMS setup or scavenging them from Ping battery packs? The thing I did see on Ping...
  8. R

    Headway "48v" 10ah pack problem

    I'm hoping I haven't really damaged my pack... it's the 16s battery with headways BMS. It's started cutting out at shorted ranges than expected and the other night the charger started fast flashing at me. I opened the case and the glue holding the cells in had failed so the cells/holders/bms...
  9. R

    Why aren't any rear hub motors equipped with freehubs?

    I asked the owner of the company I got my front hub motor from if he could get his supplier to make him a hub motor that took a standard Shimano freehub. I'm perplexed why no one is doing that already. It seems like rear hub motors are still 30 years out of touch with this... a freehub with...
  10. R

    At 20F, how many Ah should I get...

    Headway 48V10Ah pack... 56.4V hot off charger, was sitting over the weekend and had a few miles on it before riding in to work this morning. Temperature leaving the house for my 15 mile commute... 20F (freaking degrees Fahrenheit... less than 6 with windchill). Forgot my charger so tried to...
  11. R

    Cruizin Cooler... mod for more torque?

    Anyone have any info or experience with a "Cruizin Cooler"? I've been asked to help mod one for more power so that the disabled rider can get up ADA ramps. He doesn't need more speed, just more power for ramps (I think sidewalk cutouts are an issue). Thanks, Scott
  12. R

    Pros and Cons, Ping vs. Headway

    Ok, so I've got a working electric bike now that I'm enjoying. Bumped it to 48v with the SLA batteries. The power level is acceptable, actually quite a bit more than I expected. Range isn't what I'd like with three 7.5Ah batteries and one 10Ah one. Just ordered a CA from Methods and next up...
  13. R

    Correct charged and discharged voltage for 48v SLA ?

    Just got done with a 22 mile ride on my Rans Wave with a PedalGreen 360 watt front hub motor running 4 10ah SLA batteries. I completely forgot (again) to check the voltage when I got back... want to know what a safe discharge level is. Also want to know if 55v straight off the charger (13.75v...
  14. R

    switching from 36v to 48v

    Got a new hubmotor kit from Pedalgreen (local guy importing from Taiwan). Kit was easy to install and runs ok, but supposed to be able to go from 36v to 48v. Wondering how, he doesn't have the info yet. The following link contains pictures of a controller from one of his samples that got...
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