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  1. S

    hi, to keep a pack balanced, what are the differences between balance charger and bms(balancing bms) . is it one or the other or should be both? Lifep

    Hi english second language here :) i intend to build my first battery using 4 modules of BH below for a 16s lifepo4. short distance but up hill i would like to have peace of mind and that battery keep balanced. once assembled, i would like to have it set and done for the rest of its life if...
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    Need experienced advice to let me know what to expect from those cells in real life

    Hi i found a cell that is prismatic and light (not sure if plastico or aluminium encassed at 0.2kg) it is called BPS-LFP7AHP. my need is to create a light 48v lifepo4 battery to go up hills without long distance. 7amphour seems ok but i wonder if they deliver continous amps as mentionned. At...
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    is benergy aka benergytech . com legit? what are your experiences with this brand?

    They offer lots of lifepo4 choices and They write their mission is Building safe and easy-to-use lithium batteries. The batteries you can rely on. Their site says that they started building lifepo4 in 2009. Also written We specialize in OEM/ODM LiFePO4 cells and battery packs and provide the...
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    difference between standard vs max continous discharge vs peak how to establish what is needed for a motor's need

    hi i need clarification on benergy site i see 3 mesures for discharge . which one do we have to take into consideration? for example if a motor is rated 30amps how to determine the battery amps needed. so far i read that it is better to have 10amps more in the battery than the motor is asking...
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    searching for a lifepo4 battery 48 or 52v that has minimum 30ampcontinous and light(10 to15AH)

    HI i search for an already made battery for 48v motor (possibly better motor later) must be lifepo4 , tight budjet. it think 30amp continous is a minimum if i want to avoid having to buy other battery later. i dont do much milage, but there are hills. so far i only see this one wich is too...
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    wich 24v up hill motor do you suggest for giant cypress lx

    HI i have this bike in aluminum my guess. i could not confirm the drop outs but my mesurements give me 100 mm front and 12something in the back"can someone confirm this? i need help to climb hills . i dont need speed on flat nor huge distances. i weight 160 and will carry cargo for camping. i...
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    do used prismatic cell from BH need balancement? what is the work and maintenance that i will have to do

    HI i only want lifepo4 . Battery hookup sell those used JD 3.2v 30ah 5c rated prismatic Lifepo4 cells or those for 5 dollar more https://batteryhookup.com/products/lishen-3-v-40ah-lifepo4-prismatic-6c-power-cells i like that i would save time not having to solder weld but what about the time...
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    hi i bought a cellphone energy bank and they say charge it to 100 on first use?

    Hi i bought see below a power bank. in the manual it is written to fully charge the bank before using it. We all know that avoiding the 100 % charge is recommended on li ion battery so what to do? Charmast Power Bank with Built in Cable, 10000mAh USB C Battery Pack 6 Outputs 2 Inputs with...
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    Can someone help me identify this currie electro drive motor? i want its specs

    yep got it on a bike alredy installed without any info just picture. to select a battery i need to know the spec of the controller and motor. Kind of old but maybe it can help me go up hills. see pict and all components that came with it and please tell me wich model it is and where i can...
  10. S

    what is the reality of this battery. it only states max discharge for 5 sec

    hi i dont know if this is a reliable product and is it delivers as stated on diagram . do you have experience with it? does it mean that at 30 amp comsumption this battery only last about 7 minutes? i
  11. S

    what can this motor deliver ? how to test

    hi i have access to this motor . how to know if it is a 12v 24 or 36v? can i burn the motor if i plug 24 v instead of 12 volt ? how to test it safely? how to know how many miles it can uses and and approx speed. i intend to got up a hill while pelaling a bit
  12. S

    wich safety device to add to this module and what are the general steps

    hi There seems to be a short cut to building a battery for those able to get a module like this one https://batteryhookup.com/products/48v-16s-lifepo4-module-52-8v-7-5ah-396wh?variant=42977764114594 they are already spot welded in place so i imagine that this is a short cut already done step...
  13. S

    what fonction to use with this multimeter and what to avoid.

    hi i did invest a little more than i initially wanted to get this clamp meter. Im noob at multimeter. i would like to know wich fonctions to use for what regarding ebike and battery building. also since i dont know how the breacker fuse are set , maybe there is some precaution to take in...
  14. S

    how to care for a lead battery vs li ion gel

    hi i know that li ion you aim at staying between 80 and 20 pourcent. for gel battery you always want to put it back to full every time you can. what about lead battery. what is the correct utilisation? what to avoid that lessen battery life. how to store them for long time also important. How...
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    Willing to pay $ for guidance and mastermind needed! i want to build a 48v headway cell 16s 1p

    HI i want to build a safe lifepo4 48 v 16s 1 p pack to test my motor and start using my xiongda 2 spêed.the controler asks for 15 amp peak and since i might up my motor or add another one in future, i figured out that a 30 amp or 60 amp pack would be futurproof and the cells allow it. I'have...
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    how to PRE charge test capacity headway cells and which BMS and Smart CHARGER afterward?

    hi Endless sphere Ineed your help knowledge: I Have a xiongda 2 speed motor 48volt high torque 350w rear. 15 amps max the controller is a kt48svprc xd15d , rated current 7A; max current:15A +-1A it looks similar to this one in the very bottom link. I am exploring the possibility of building...
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    what do you guys think of this charger? it seems very smart and programmable maybe new excellent choice for lifepo4?

    it seems very smart Blue Smart IP65 Charger . i discovered it reading on https://www.wheelchairdriver.com/ forum . (they are also very knowledgeable people) https://www.victronenergy.com/upload/documents/Folder-A5-Blue-Smart-IP65-Charger-120V_EN_web.pdf...
  18. S

    is it true that when importing cells from usa to CANADA we have to do a 2.5x multiplication of the price?

    HI im CANADA , QUebec city. there are not many cell seller deals in canada . i read this reddit post saying from what i can understand that any cell or battery you import from usa to canada is going to end up costing more than twice the prices on the us website. like ordering something from...
  19. S

    what would a high discharge LIFEpo4 low watthour battery loke like (just to go up hill)

    So there are 2 big hill that i have to go up total less than 1km. i can pedal a little bit (both knees hurt) to help my xiongda 48 volt 2speed hub that draws 15 A max. so there need not to be much watthour but rather it would need high continous discharge since i would only put one cell or 2 in...
  20. S

    will a aliexpress lifepo4 be always safer than a good liion

    hi i read that life po4 are safer because they cannot explode nor take fire. i know that buy cheap liion battery is a bad idea because you cant know to cell used inside so this one i consider not safe and cant be sure of the contacts iknow that some sony and samsung li ion are more solid than...
  21. S

    what is the size ratio of li-ion vs LiFePO4

    yes lion is more compact bwt id like to have an idea of similar capacity battery how big and heavy are they? Are lifepo4 just bigger are they are aslo heavier? thank you example images picture will be appreciate
  22. S

    what multimetre should i choose for present cell mesurement and future home task

    HI I like to make a good buy when i do a buying Atm i only need to mesure voltage but maybe tomorow i will need other functions i dont want to become an expert on multimeter. i see 3 choices with like 15 doll difference below wich should i choose? i never had to use a multimeter and live in...
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