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battery pack

  1. Anyone bought a battery from SHENZHEN RJ ENERGY?

    Batteries and Charging
    I'm on the brink of transferring $2800 to this company for a 96v 100ah LiFePO4 battery pack. Everything I can find about them looks legit. I've been corresponding with the sales guy for over a month. If they are fake they are sure putting a lot of effort into looking real...
  2. Designing Custom Battery Pack

    Batteries and Charging
    So, first off, I'm new to the forum and I've been lurking for a while. I have saved about 10k for my first EV project. I will be converting a 1974 Chevy Vega. This car is about 2100lb stock. I plan to shave about 300lb off of it before the conversion. I've decided on this motor (144v)...
  3. 18650 48V Pack for Golf Cart

    Batteries and Charging
    Hello all, I've come across a large number of good laptop batteries containing mostly CGR 18650CG and CGR18650D Batteries, with capacities of 2250, and 2350 mah respectively. Recently our golf cart was left out on low charge in the cold, and many of its lead acid batteries are now dead. Time for...
  4. For Sale: 37 Dow Kokam 75Ah NMC Lipo - $3,500

    Classifieds
    37 Dow Kokam XALT 75Ah lithium batteries. NickelManganeseCobalt(NMC) Lithium Ion/Graphite Anode Cathode For all the specifics see the data sheet included: http://www.xaltenergy.com/images/pdfs/datasheets/XE_Data_75HP_Updated.pdf You can also look at the build thread that I had for my electric...
  5. Leaf module based 150V 65Ah battery pack...

    Batteries and Charging
    This post might be useful for those looking to upgrade lead acid based 144V systems... Here is the configuration I came up with, while reusing the Nissan Leaf interconnects, safety covers, and BMS wiring. This is one of four 150V 65Ah modules for my Solectria E10. Total battery weight will...
  6. Nissan Leaf Battery Pack Sniffer...

    Batteries and Charging
    USB powered CAN sniffer and display to read out the state of a Nissan Leaf Battery Pack. For use when salvaging battery packs from wrecked Leafs (Leaves?). Weekend project, built using parts on hand. Videos: http://www.youtube.com/playlist?list=PLQdu_G7xyFIR29L5izNZavf4Uf8IMWuZm Pics...
  7. Simple cheap ($5) battery charger module (CV/CC buck reg)

    Batteries and Charging
    I just found this constant current / constant voltage step down (buck) charger module that can supply up to 3 amps and 30 VDC from a DC source, and it has an LED indicating charging and full charge (OK). This should work for small lithium battery packs or single cells, or even one or two 12V...
  8. Selling Lots of GP30EVH 30Ahr NiMH Prismatic Cells

    Classifieds
    Hi Guys, I've got 168 NiMH 30Ahr prismatic batteries for sale. The cells are USED but still hold a charge (they should still register between 20Ahr and 25Ahr). Picture of pack is attached (the cells are on 3 layers, only the top layer is visible in the picture). Here is the spec-sheet for...
  9. For Sale 18 XS Power 16V 50Ah Batteries (Local Sales only Please)

    Classifieds
    For Sale 18 XS Power 16V XP1000 Deep Cycle 50Ah Batteries I'm have 18 16 Volt AGM XP1000 batteries, they have about 9 months use on them and are in great condition. I updated to Lithium Ion Phosphate Batteries which is the reason for swapping them out...
  10. Getting Electricity from Alternator and Batteries

    All EV Conversions and Builds
    Has anyone ever tried to split the power demand for the electric motor between an alternator and the batteries? I have some questions regarding this. I am trying to do a diesel electric hybrid, and originally I was going to use 10-12 batteries to get the voltage and amperage demands. However it...
  11. 48V 40A LiFePO4 pack $759 + $231 shipping

    Batteries and Charging
    I was looking at this guy's wheel motors and he has 48V 40A LiFePO4 packs using A123 18650 cells for $759 + $231 shipping from Hong Kong. This also includes a 6A charger and BMS. This works out to $0.51/Wh including delivery, so a 11.5 kWh 360V pack, using 6 of these, would be $5940. Total...
  12. Need 10 used 6-volt flooded deep cycle batteries (Golf cart batteries)

    Classifieds
    Need 10 decent used 6-volt flooded deep cycle batteries (Golf cart batteries) in CA. asap. Please call me (Mac) 323 253 33090 Thanks
  13. Need Batteries for a 1978 ComutaCar

    Batteries and Charging
    I am purchasing a 1978 ComutaCar. The car uses & NEEDS 10 6-volt Golf cart (Flooded deep cycle) batteries. My purchase has me cash strapped, I do own a line of credit at wallmart. I have been told & found on numerous online posts that wallmart has great prices on Golf cart batteries. However...
  14. Shorted battery pack

    Technical Discussion
    Always seems I'm asking more than I'm helping.. With a Fluke meter across my Battery Pack to the trucks ground, I'm reading some voltage. I have 46 Thundersky 160 AH. Measuring from ground to the 40th battery, I get very little voltage, but measuring at battery 41-46, the voltage increases...
  15. LifePo4 48 Volt Battery Packs for Sale

    Classifieds
    Two 48 Volt x 100 AH LifePo4 battery packs. Price is $1,600 each plus shipping in the U.S. Very slightly used for my electric boat. Includes Battery Case, BMS and Charger. Please check specifications at HiPower New Energy Website. HiPower is one of the top shelf company for lithium iron...
  16. Calculating theoretical efficiency.

    EV Performance
    I'm working on my first EV conversion and really want to run through a lot of theoretical configurations for my battery pack to get the performance I want out of it, but one thing I'm having trouble with is getting an number for "efficiency" or rather, an estimate of watts/mile. This seems to be...
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