Now that I have done a ton of homework on batteries. The lowest recommendation on the jumbo shark per cell (min. discharge) is 2.75V. From what I found online these batteries are run down to the min. number between 500 and a 1000 times. I am figuring that is if every battery cell is performing optimumly. The jumbo shark is a 14s by 5p set up. We can multiply the min. 2.75 x 14 which gives us 38.5v as the minimum voltage. Now I can be wrong and plan to do some more research. I found most people like the min volts at 3.03 volts on lower quality batteries to be on the safe side. I kinda want to run it at the minimum 39v and see if I run into any issues. Thanks for the feedback. I would have never jumped down the rabbit hole if you guys didn't say anything. I will keep you guys in the loop on this. If anyone is reading this keep your cutoff voltage between 42 and 43 on a 52v battery. I am by no means a battery expert. Love the comments. Thanks again.
I think it's more about what the cutoff by the BMS is, which is independent from what the controller does. I once ran my 52 volt battery down to 47 volts and the BMS cut it off. I now have a new custom built battery using the Tesla 21800 cells, it has 20 amp hours and puts out about 36 amps. My friend who built the battery told me that it is wise to have "head room". My controller probably only allows 28 amps max for my BBSHD. Unfortunately my frame is such that I cant fit a bigger battery in my triangle, and I don't want to sport a battery on my rear rack, I use the rear rack for beverages and ice only, I don't sport a back back. If I could fit a 60 or 72 volt battery, I would get a Ludi controller. My friend has one to sell me, but he said I really need a bigger battery for the Ludi, otherwise I might blow out the BMS or the battery pack, a Ludi controller can handle 50 up to 60 amps @ 72 volts, about 4,320 watts, more power than I need.
Low voltage cut off for a 52 V battery shouldn’t be any lower than 43 V. At that point the battery cells are considered 0% charged and you are now into damage territory for the cells. The amount of extra time you’ll get out of them is very small, the amount of damage you can do to the batteries is very large. The two worst things you can do to lithium ion batteries is over discharging them, and leaving them at a high state of charge for a long time.
Yeah I read never to Lower the voltage level only keep it at recommended. Also it's alot of fun programming and messing with it. I top out at 37mph on a 48v 24.5ah at Max 30 amps on my controller. Really haven't seen a difference in my battery draining neither. Like always love the videos guys keep them coming.
@@FirstTimersCycling it was one of the bafangs original batteries before they dropped the amp hours down to a smaller amp hour one. Tried buying another one on Amazon but it's discontinued
Thank you for this very informative video. I have a Bafang 250w m400 motor. When I pedal I have a feeling that the engine only helps up to a certain point. Than I have to switch into a higher gear ( cassette gear ) and then it helps again. Do you know if there is a setting where I can prolong this help limit? I don't have a throttle, only pedal assist.
Hello and thank you for your question! What you feel is how we feel with the BBSHD 1000w Bafang setup. From PA1-PA9 after a certain mph/kph pedal assist will stop until you switch to the next gear. What we think is the motor may be load sensing or rpm sensing so it can detect when to shut off assist to conserve power. Unfortunately, I don't think this is a setting we can change. Might have to direct this question to Bafang tuners out there. I only know of one called Golden Motor where we use their Bafang tunes to up the power delivery on the motor. I hope this helps!
@@FirstTimersCycling Thank you for your swift and detailed answer. I really appreciate you help and suggestion. I will have a look if Golden Motor could have an answer.
Hi there and thank you for your question! To be honest, when we set Alvin's bike to 25A, it seemed like battery life was longer but there were too many variables involved. His front tire is too wide so it drags on the fork, his rim brakes at the time were dragging, and multiple times he had to tow one of our friends when he was gassed out. So this all led to battery depleting faster. Up until today, his bike now has disc brakes but he's still been dealing with the front tire drag. He did buy different tires though so this should help a ton. Stay tuned! 😊
Hi Guys, I've just converted a, Trek Farley 5, 2016 model. Using the 48v bafang bbshd + a 48v 20ah battery,, the bike is a beast to look at, I've still got a few bits to do yet but can not wait to get out on it, ps I will be watching you're videos to see what you're doing, Thanks again Alan
@@alanread8468 Nice! What chainring are you using in the front? The standard 46T? Just looked up your bike, with the fat tire and bbshd setup that would look BEAST! Somebody commented before and had a similar bike, but put a mid-drive and front hub drive on his bike lol. Can't imagine how crazy that would look.
Nice, wish we could use a lower chainring. I believe your bike has thru axles and not a quick release hub right? Because ours, with QR's I don't think it allows us to use anything lower than 42T chainrings up front due to chain line. The bafang can handle it just fine but it just would have been nice to use a 36 or 40T front. Anyway, thanks for commenting!
When we changed our "Low Battery Protection" we ended up moving it back to the recommended voltage. We don't advise messing with that setting. Too many articles and reviews stating you may hurt your battery by lowering the Low Battery Protection.
“Hey, I need help programming my Ouxi V8. I bought a programming cable, but I found out that the cable going to my motor is female, and the programming cable is also female. What can I do to adjust the settings on my bike?”
Hello and thank you for commenting! I would first try and find the correct cable or conversion cable. If you can't get that first, I don't think you'll be able to connect to your ebike controller.
Thank you for commenting! Reading your comment really had us doing more research on the subject. Appreciate the feedback for this topic as it may help others who stumble onto this channel! 👍
Yup if you want your battery to last a normal life span. Yes you get a extra battery life with lower voltage cutoff but end up shoretning the life span of battery so its a bad rookie move for sure.
Guys, can you "save as" the SPEEED configuration file? because for me did not work lately and I know it worked before. I tried it on a different phone, also does not work anymore.
Hey, I'll have to ask Alvin to try it as his bike was the one we tuned. I'll get back to you when I hear back. In the meantime, make sure the app is up to date and see the reviews for the app to see if others are experiencing the same thing.
Can't say for sure but it wouldn't do any harm to try to connect and make a simple change like PA1 assist to level 20% instead of 10% or wherever it's at. If you receive any errors when trying to connect, then you'll know it won't work. It's not like a firmware update like on our other videos where we totally change the mapping of the Bafang controller.
@@dazbrugernavn Wish I could tell you for sure but we only have knowledge that it will work for sure on the BBSHD 1000W and most likely the BBS02 750W models
I have 1000 w BBSHD and 52v 21ah shark battery. I bumped up my max output from factory setting 25 to 30 amps. I have 650 miles on my build. What do you think if I bumped it up to 35 or 40 amps?I use the bike for commuting 15 miles round trip.
Wow the more amps, the more power but the faster the battery will drain. If you only ride 15miles round trip, I'd say give it a try! It'll be fun that's for sure lol
@@gieljaamverburgh3169 As are we my friend. We had to do a lot of research and made sure we were applying the right firmware applicable to our setup. I'm sorry yours is throwing an error right now but starting over with the original firmware is what your next step should be.
Ahh brilliant maybe mine has the 52v firmware then.. I hear people running the 48v firmware so they can have 30a instead of 28a but can't fully charge there 52v battery due to over voltage error?
@@sickswan61 Interesting. Not exactly sure on the over voltage error as Alvin hasn't experienced that yet with his 52v battery and this firmware update. We're still messing with it but will look into that. We have a file that may allow us to use the Speeed app again but we haven't tested yet. Perhaps we'll make another video on that when we get to it.
Thanks for the feedback! We'll make sure to lower the music more so voices can be heard more clearly. 👍Did you have a question about anything that may have not been clear enough for you?
This program doesn't work and they know it doesn't work and they're leaving the video up bring the video up don't do this to your bike jerbike BBS2 midnight drive now useless piece of junk
We still need to convert the controller to read 52v as it's only showing 48v. On this episode we couldn't change it to 52v from the phone. We will be doing another episode with the tuner connected to a laptop so we can do the conversion and research some settings. Make sure to subscribe for when we do that episode!
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The SPEEED program is definitely the way to go!
Now that I have done a ton of homework on batteries. The lowest recommendation on the jumbo shark per cell (min. discharge) is 2.75V. From what I found online these batteries are run down to the min. number between 500 and a 1000 times. I am figuring that is if every battery cell is performing optimumly. The jumbo shark is a 14s by 5p set up. We can multiply the min. 2.75 x 14 which gives us 38.5v as the minimum voltage. Now I can be wrong and plan to do some more research. I found most people like the min volts at 3.03 volts on lower quality batteries to be on the safe side. I kinda want to run it at the minimum 39v and see if I run into any issues. Thanks for the feedback. I would have never jumped down the rabbit hole if you guys didn't say anything. I will keep you guys in the loop on this. If anyone is reading this keep your cutoff voltage between 42 and 43 on a 52v battery. I am by no means a battery expert. Love the comments. Thanks again.
Alvin always trying to bring everything to the max lol
I think it's more about what the cutoff by the BMS is, which is independent from what the controller does. I once ran my 52 volt battery down to 47 volts and the BMS cut it off.
I now have a new custom built battery using the Tesla 21800 cells, it has 20 amp hours and puts out about 36 amps. My friend who built the battery told me that it is wise to have "head room". My controller probably only allows 28 amps max for my BBSHD.
Unfortunately my frame is such that I cant fit a bigger battery in my triangle, and I don't want to sport a battery on my rear rack, I use the rear rack for beverages and ice only, I don't sport a back back. If I could fit a 60 or 72 volt battery, I would get a Ludi controller. My friend has one to sell me, but he said I really need a bigger battery for the Ludi, otherwise I might blow out the BMS or the battery pack, a Ludi controller can handle 50 up to 60 amps @ 72 volts, about 4,320 watts, more power than I need.
Wow this is some very useful information. Thank you for that!
Low voltage cut off for a 52 V battery shouldn’t be any lower than 43 V. At that point the battery cells are considered 0% charged and you are now into damage territory for the cells. The amount of extra time you’ll get out of them is very small, the amount of damage you can do to the batteries is very large.
The two worst things you can do to lithium ion batteries is over discharging them, and leaving them at a high state of charge for a long time.
We ran with it a couple times. Didn't see a noticeable difference so we moved it back to 43v. Thanks for the feedback though!
Yes lithium cells should not really go down pass 3 to 3.1 volts per cell. Which would be 3volts x 14cells for a 52 volt pack =42 to 43 volts.
I've actually got that lead so I set my throttle to give me full throttle all the time same as wot you did and I olso turned my amps down 😊
Nice, we have a new map we havent tried yet but it's supposed to unlock more power lol.
Yeah I read never to Lower the voltage level only keep it at recommended. Also it's alot of fun programming and messing with it. I top out at 37mph on a 48v 24.5ah at Max 30 amps on my controller. Really haven't seen a difference in my battery draining neither. Like always love the videos guys keep them coming.
Hey! Thanks for commenting! Agreed! Programing the Bafang is fun! What battery are you using for the 48v? Never knew they made one with 24.5Ah.
@@FirstTimersCycling it was one of the bafangs original batteries before they dropped the amp hours down to a smaller amp hour one. Tried buying another one on Amazon but it's discontinued
Thank you for this very informative video. I have a Bafang 250w m400 motor. When I pedal I have a feeling that the engine only helps up to a certain point. Than I have to switch into a higher gear ( cassette gear ) and then it helps again. Do you know if there is a setting where I can prolong this help limit? I don't have a throttle, only pedal assist.
Hello and thank you for your question! What you feel is how we feel with the BBSHD 1000w Bafang setup. From PA1-PA9 after a certain mph/kph pedal assist will stop until you switch to the next gear. What we think is the motor may be load sensing or rpm sensing so it can detect when to shut off assist to conserve power. Unfortunately, I don't think this is a setting we can change. Might have to direct this question to Bafang tuners out there. I only know of one called Golden Motor where we use their Bafang tunes to up the power delivery on the motor. I hope this helps!
@@FirstTimersCycling Thank you for your swift and detailed answer. I really appreciate you help and suggestion. I will have a look if Golden Motor could have an answer.
@@joaomarveloso1049 You're welcome!
Amazing thanks can't wait to get one
Tuning the Bafang did wonders for Alvin. He loves it!
Hi guys". Great video, how did the bike perform when set to 25 amps, what difference in battery range did you get
Hi there and thank you for your question! To be honest, when we set Alvin's bike to 25A, it seemed like battery life was longer but there were too many variables involved. His front tire is too wide so it drags on the fork, his rim brakes at the time were dragging, and multiple times he had to tow one of our friends when he was gassed out. So this all led to battery depleting faster.
Up until today, his bike now has disc brakes but he's still been dealing with the front tire drag. He did buy different tires though so this should help a ton. Stay tuned! 😊
Hi Guys,
I've just converted a, Trek Farley 5, 2016 model. Using the 48v bafang bbshd + a 48v 20ah battery,, the bike is a beast to look at, I've still got a few bits to do yet but can not wait to get out on it, ps I will be watching you're videos to see what you're doing,
Thanks again Alan
@@alanread8468 Nice! What chainring are you using in the front? The standard 46T? Just looked up your bike, with the fat tire and bbshd setup that would look BEAST! Somebody commented before and had a similar bike, but put a mid-drive and front hub drive on his bike lol. Can't imagine how crazy that would look.
Hi guys,
I'm using a lekkie 40t chainring with a 15 offset ( I think) the rear cassette is a 10-42
Nice, wish we could use a lower chainring. I believe your bike has thru axles and not a quick release hub right? Because ours, with QR's I don't think it allows us to use anything lower than 42T chainrings up front due to chain line. The bafang can handle it just fine but it just would have been nice to use a 36 or 40T front. Anyway, thanks for commenting!
If I wanted an extra 5kms range from my 36v battery and the Low Battery Protection is set to 41v, could I safely lower that to 40v?
When we changed our "Low Battery Protection" we ended up moving it back to the recommended voltage. We don't advise messing with that setting. Too many articles and reviews stating you may hurt your battery by lowering the Low Battery Protection.
“Hey, I need help programming my Ouxi V8. I bought a programming cable, but I found out that the cable going to my motor is female, and the programming cable is also female. What can I do to adjust the settings on my bike?”
Hello and thank you for commenting! I would first try and find the correct cable or conversion cable. If you can't get that first, I don't think you'll be able to connect to your ebike controller.
Suggested low battery protection for a 52v battery is 43v. The lower is not better....
Thank you for commenting! Reading your comment really had us doing more research on the subject. Appreciate the feedback for this topic as it may help others who stumble onto this channel! 👍
Yup if you want your battery to last a normal life span. Yes you get a extra battery life with lower voltage cutoff but end up shoretning the life span of battery so its a bad rookie move for sure.
I looked but didn’t see it. Did you ever go back and reprogram using Speeed?
Yes we have an episode where we fully unlock the Bafang with a different firmware update. This allowed us to fine tune with the Speeed app
How can all these settings be printed out for later reference?
Hello and thank you for commenting! Haven't tried printing this stuff, maybe a picture instead?
Guys, can you "save as" the SPEEED configuration file? because for me did not work lately and I know it worked before. I tried it on a different phone, also does not work anymore.
Hey, I'll have to ask Alvin to try it as his bike was the one we tuned. I'll get back to you when I hear back. In the meantime, make sure the app is up to date and see the reviews for the app to see if others are experiencing the same thing.
Will this Work with bafang m400 250w?
Can't say for sure but it wouldn't do any harm to try to connect and make a simple change like PA1 assist to level 20% instead of 10% or wherever it's at. If you receive any errors when trying to connect, then you'll know it won't work. It's not like a firmware update like on our other videos where we totally change the mapping of the Bafang controller.
@@FirstTimersCycling its because im going to buy new. But would be a shame if IT didnt Work when i got home 😂
@@dazbrugernavn Wish I could tell you for sure but we only have knowledge that it will work for sure on the BBSHD 1000W and most likely the BBS02 750W models
Is the BBS3 the same s the BBSHD 1,000w motor?
I don't think so but maybe try checking the Bafang website. I'm no expert but it sounds like it's a different motor. The BBS HD stands for Heavy Duty
Yes, same thing.
@@creativity.studio4967 From what I read there the same.
I have 1000 w BBSHD and 52v 21ah shark battery.
I bumped up my max output from factory setting 25 to 30 amps. I have 650 miles on my build. What do you think if I bumped it up to 35 or 40 amps?I use the bike for commuting 15 miles round trip.
Wow the more amps, the more power but the faster the battery will drain. If you only ride 15miles round trip, I'd say give it a try! It'll be fun that's for sure lol
More amps mean more heat in the motor
This is true 👍
What file did u use? I only can install 28A
The file from the site in the description is for 52V 16Ah
Allright, I missed that. I'm getting the 07h error on my bbshd motor that has a 52V battery
@@gieljaamverburgh3169 You'll have to find a base map for your 28Ah to revert back to I'm afraid..
@@FirstTimersCycling How do you mean if I can ask? I'm new to all this.
@@gieljaamverburgh3169 As are we my friend. We had to do a lot of research and made sure we were applying the right firmware applicable to our setup. I'm sorry yours is throwing an error right now but starting over with the original firmware is what your next step should be.
52V battery cutoff should be 41.
👍 Since the time of filming this episode, we have switched battery cutoff back to 41v.
i cant connect for some reason by phone
If flashed by the 48v to 52v map, you won't be able to connect to the Speeed app again. Still trying to figure that out
Ahh brilliant maybe mine has the 52v firmware then.. I hear people running the 48v firmware so they can have 30a instead of 28a but can't fully charge there 52v battery due to over voltage error?
@@sickswan61 Interesting. Not exactly sure on the over voltage error as Alvin hasn't experienced that yet with his 52v battery and this firmware update. We're still messing with it but will look into that. We have a file that may allow us to use the Speeed app again but we haven't tested yet. Perhaps we'll make another video on that when we get to it.
@@FirstTimersCycling yeah that would be great.. When you loaded the 52v firmware does the max current only go up to 28a instead of 30?
@@sickswan61 Yes same as you. Hopefully the other firmware update will allow us to connect to the Speeed app to change the amperage. We shall see! 🙏
Music is distracting
Thanks for the feedback! We'll make sure to lower the music more so voices can be heard more clearly. 👍Did you have a question about anything that may have not been clear enough for you?
This program doesn't work and they know it doesn't work and they're leaving the video up bring the video up don't do this to your bike jerbike BBS2 midnight drive now useless piece of junk
I’ve got a 52v 20ah battery what settings do u recommend
We still need to convert the controller to read 52v as it's only showing 48v. On this episode we couldn't change it to 52v from the phone. We will be doing another episode with the tuner connected to a laptop so we can do the conversion and research some settings. Make sure to subscribe for when we do that episode!