Endless Sphere

5 bricks #1 cell reading high ir

correct?

suspect more likely imax problem

recommend dc ir test

10s known amp load

use voltage drop to calculate ir

youtube lipo ir testing

in most cases

feed throttle switched 4.5vdc

higher than that might not work

may interpret full 5vdc as error

disables controller

avoid wimpy light duty bicycle components

8 speed steel stuff wins round

frequently use wear gauge

replace cheap steel chain showing any signs stretch wear

avoid wimpy light duty bicycle components

8 speed steel stuff wins these situations

nice work love to see more

good tune too

imbed for ya

didnt see those dropouts before

not ideal but manageable

very tight axle should hold

or add something as a stop

to any forward movement

if its problem

lesson learned junk cells

never buy cells with fire in name

if lg

if properly welded

if decent bms

likely good battery pack


many vendor dont lie

many suppliers do


basically gamble

unattended charging

do where can survive fire


good luck

dunno seller gear sensor no big deal stop pedaling or simply shift when motor rpm winds up and watts go down ebay likely source if you must 12ga wire and choose power connectors many use app anderson power pole you will not longer need front shifter battery may fit or use problem solving sunrace slm...

if resting charger 83v

81v pack may be out of cell balance

search youtube lipo ir testing internal resistance dont change much using high or low amps as mandog explain 180w fine for basic capacity testing important thing good balancing following common bms balancing many chargers wont reinitiate charge therefore load small amount recharge rinse repeat sever...

balmorhea doesn’t know whats ridden for attention

obvious why the post was made

therapy helps

avoid regen

fat tires less efficient of course

severe depends on perspective



mid drive for noticeable incline efficiency

often simple install bbshd 100 120

use both extensively continuous power dissipation is key hd rated to dissipate 1000w continuous peaks 1500w okay but not for long newest 02 rated 750w continuous but not really 600w continuous safe range very intermittent peaks 1000w okay not powering fat tire bike ride more like pedal bicycle 02 li...

sickly sweet cherry solvent

don't breath it

some cells might be salvageable

but not leaking pouches

pretty much scrap

bbsxx

stock factory power level

exceeds continuous rating


levels 1-9 enabled

use 6 or below

will not exceed continuous limit

stay under 1000w bbshd very reliable

nyc cargo ebikes well over +10k miles


stay under 500w bbs02 very reliable


trouble is most users operate bbshd 1500w

or 900-1000w bbs02


not gonna last @ those levels

buy lotto ticket today

you are lucky

1500w continuous will damage bbshd/03

short bursts usually don’t

unless too many bursts

non-sinewave controller will sound like engraver

boost converter current will vary

across pack charging curve

max amp setting often limited

within narrow voltage span



simple effective numerous choices

12vdc inverter to 120vac

back to whatever dc required



some losses yeah

big deal ?

not here

luna mosso folder

similar to what i suggest

very fair price for everything



think best get to know

local ebike mech/tech

pre built eventually need work too

need mid drive for steep hills

get to know ebike mechanic

local to you

hire to convert $300-$600 dahon

use bafang bbs02

300-750Wh battery pack(s)

$1500 parts

$ remains for labor

use similar schemes here


dc converters do work

sometimes tricky current limiting load side



36v rc can be difficult to source

i travel with small 106B

helps touching up few cells



automotive inverter often easiest 12vdc to VAC line supply

likely already have VAC bulk charger

disable auto off

may avoid shutdown

when no speed sensor