someguy152

im just trying to figure out what bms i need to replace my current one

so does that mean if we're shopping for parts and need to know Amp ratings to look for, we should use the Max power / voltage of machine? is the max power usually listed in the specs somewhere

so if my motor/wheel is rated for 1200W, do i just take 1200/the voltage of my wheel to get the max current and then get a BMS rated for higher than that current? or do these W numbers not equal the maximum/peak W and that's the number i need to find.

this looks compact enough or 16s at least https://www.aliexpress.com/item/4000423794343.html?spm=a2g0o.productlist.0.0.cf811c8bDBsvQ6&algo_pvid=a03b3336-3f1a-4265-a0c9-7d158b68fb86&algo_expid=a03b3336-3f1a-4265-a0c9-7d158b68fb86-9&btsid=0ab6d59515859180575224557ec995&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ wonder when we will start seeing them

i got my 14s last week for $300, 840wh, 100miles. glad i had my alerts set up... a couple days later another one brand new went from $250 to 430 in the last 5 min of the auction. was very tempted to say the least. it's a phenomenal deal i think

yea there's one user who constantly sells refurbished s1's. i have alerts for many of the wheels im interested in on ebay, so yes there arent a lot.

it depends on the app and when someone installs it. my darknessbot app measures 5% below my wheellog app for all 3 wheels. When i first got my wheels, i didn't even know of an app. mabye by the time i install it, i wouldn't be able to tell what 100% means. yes one can look at voltage, but for kingsong S wheels, they already measure 66 at full on the app. I can imagine ppl can look at the numbers and not know what full is. I wonder how long that will take to discern. If ur a casual rider, which i imagine most ppl to be, and ur wheel can do 20 to 30mph max, but you only usually go less than 75% of that, then i'd imagine it'll take a long time for you to experience that feeling of not having fun. The demographic of users on this forum I wonder if its representative of all people that buy these devices.. Maybe there's a lot of ppl who just run their devices to the ground instead of selling on the used market

so something i don't get is, for the general population who have these devices who aren't reading these forums but just go out and about with their devices with normal chargers, how would they ever really know that something is wrong with their battery besides noticing less range, cutouts, or the device stops taking a charge (or rarely, fire). I'm wondering if there's enough safeguards that kingsong or any manufacturer has in place for these batteries where for example , if a parallel pack does go to 0v without me knowing, can or will the charger and bms combo still charge the device safely and we can ride normally until the device stops taking a charge or the range is so much less that we investigate. are we just being too anal? I mean the device doesn't exactly need all 67 or so volts and can still run on less, right?

thank you for the link, it is verypractical actionable info

good point, very interesting

am i looking for 0deg bent valve inner tubes for Kingsong wheels (the S series), i know i can visually look at my wheels, but that doesn't mean i can tell what angle they're at

ah i see, im currently a kingsong 67v guy so wont' need those for a while. you got on aliexpress?

i need to remember not to sweat the small stuff. that's why i think it's just better to just charge with dumb charger every time or every other time. at least it'll keep them balanced more likely than what i was doing before, trying to just do 80% and then do 100% every 10 or so times. I think i've "ruined" parts of two batteries, vs having decreased range

interesting can you give me an example as i've never heard of these adapters for chargers. they are safe?

im very grateful for these practical answers for my peabody brain.