Endless Sphere

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

remember to half published C rates

don't talk to devices

put em where they do the most good

best antenna is elevation

safe estimate 20 miles

double or more any c rate spec

consider bms for charge only

discharge directly from cell tabs

regularly monitored for balance and ir

no sensor

sleep settings

influence off time

majority instances

clutch action can be improved

springs die become mangled

no longer

push rollers

into ramp

check replace

use generic springs

throttle ban ignorant


reasonable laws

brake cutoffs

lighting if night

ride safely

cool stuff

suspect expensive

but if money no object

great clean wiring

understand nominal voltage rating battery voltages perform across wide voltage range 72v lithium pack envelope usually between 60-84v almost 25v difference full to empty soc next thesis understand voltage changes under load vs open circuit ohms law is your friend that platform front geared hub good ...

54.6v is 48v 13s top charge

if measurements correct

pack is not fully charging

many phone apps

strobe measurement

chain wear gauge

used regularly

any sign wear

replace chain

cogs last much longer




replacement interval

cheap 6-8 speed stuff

about 1000 mile

2 months my commute

forum rules

require price

for sale items

on good day

bbs02 barely tolerates

750w continuous

more like 600-700w

especially hot days


many programmings

full throttle or high PAS

exceed 1000w


major difference between

peak and continuous wattage



limiting average power prevents

damage to controller