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[Diggs Ut]

What are the corresponding voltages for charger shut down on the 80/90/100% charger?

[paxtana]

Not really specific, as they are set with potentiometers which have at least a little drift. But you can see charts showing estimates on this page https://electricbike.com/forum/forum...ries-basic-faq

Just keep in mind they are estimates, a guarantee you will get that specific number right down to a tenth of a volt. Many of those chargers can also be adjusted as noted in the documentation.

[Mike_V]

Thanks ! To both:
Informative Q & A
Mike

[MIKEinNC]

Please give me a refresher on the best grease(s) to use in a BBSHD.
I recently thoroughly cleaned one of mine, and regreased both the primary and secondary with Mobil 28, which I’d seen recommended.
Now I’ve seen SCH100 recommended as a better choice, due to Mobil 28’s incompatibility with lithium lube.
That leads me to two questions:
1) I have a peek gear on order from Luna, and the description mentions that it’s been pre-lubed. Will that be with lithium lube, that I should remove, if I want to use my Mobil 28 in the primary of another BBSHD, in which I’m installing the peek gear?
2)On the same order I have another BBSHD, for a third bike, and I’d like to open, and possibly add grease, to the secondary reduction gear, before installing the drive.
Am I correct in thinking that’s lubricated with molly grease, so I shouldn’t have any issues with just adding Mobil 28 to whatever is already there?
I have a tube of the SCH100 on order, so I could just wait for that to arrive, if it’s a better choice.
Thanks

[paxtana]

I believe they are using mobil28 prelubed.

I can't speak to whether sch100 is better, but I have added mobil28 to motors that I have used since 2016, never bothered to clean off anything, at most just wiped off any excess preapplied grease. Never had a problem, though that is not a guarantee.

[MIKEinNC]

Thanks, Paxtana.

[Andy Salmon]

Hi, Eric. I bought a 48v 3amp Mini Charger 9/10/20. Looking at the plug, the brown wire goes to (+) the blue to (-) but the manual says if I need to change the plug (I do) "be sure the blue goes to (+) and the brown goes to (-)." Which is correct?

[paxtana]

The correct polarity should be printed directly on the sticker affixed to the charger. You can also see the polarity right on the xt60, each side is stamped + or -. You can also double check with any multimeter

[Andy Salmon]

Ok, then the instructions are WRONG!

[paxtana]

Yes, basically. It was written for a previous revision

[eastSideGreg]

i have a new luna x1 enduro and when i try to torque the front wheel axle to spec it makes the wheel too tight and won't spin freely as it should. it's not the disc brake, it is tight without the brake attached. i must of missed putting in a spacer between the fork and the wheel (or something). if you could let me know what's up i'd appreciate it. as well i have two plastic light gray barrels for the rockshox but don't know what they are for. clue me in please.

[paxtana]

If you are attempting to use it without the spacers for the front wheel then I would say that is probably the cause of the issue. See the pic on this page and check if you added those. Last I checked they would usually be ziptied to the bike

https://electricbike.com/forum/forum/knowledge-base/bikes-aa/93790-luna-x-1-enduro-fs-ebike#post93790

[Cezar]

Hello all,
I am looking for a way - how to discharge the battery safely at home, not by bike - at least a few volts ..

[paxtana]

Cezar Here is a graphic I made for a testing video which goes over some options. This was on a video using a brake resistor as the discharger.

[Cezar]

Thanks for the answer.
I have an ordinary old electric heater (not digital) and a toaster - I will try to discharge the battery with them.

[73Eldo]

A light bulb if you can still find one would be the easiest way I can think of for most people. Everything else can be a lot harder to understand what sort of load it will be and how to safely mount it and such. At least a light bulb you know is rated for 120v and isn't hard to come up with a mount and connect. A 60w won't get that hot but will take some time to really make a dent in the charge. If you want to discharge it fairly quickly try and find one of those old school 500w halogen work lights. You know the kind that use the long narrow bulb and were good at creating a lot of heat and starting anything they touched on fire. Wait did you want safe?

[73Eldo]

Just happened to be online looking at Home Depot and this is still a stock item at my local store. $10 and you are almost done. Cut the regular plug off the end and splice on the pigtails for your battery and you should be set. Quick math in my head (which could be wrong) is you would be getting around 60 watt load at 48v so not gonna suck the juice as fast as a nice pedal assist on flat ground but will still get the job done. I'm sure they have a $10 volt meter you could buy too and splice in with your pigtail so you can see whats going on.

https://www.homedepot.com/p/HDX-250-Watt-Portable-Halogen-Work-Light-265669/300453898

[Cezar]

Thanks for the answer.
I live in Europe - we have 230V voltage here.
I tried to connect a soldering iron about 30W - normally working on 230V AC. After an hour, it was barely warm, but low power and the voltage drop was very slow. I need discharging in order to properly store the battery in winter - I wanted to charge it and discharge it once a month. And what would happen if I connected a small electric heater to heat the air about 1kW - without a fan?

[73Eldo]

A restive load (something that is basically a heater) is different than most other loads. Most loads as the voltage goes up the amps or watts needed goes down. Resistors work the other way, more voltage means more amps or watts. That is why your soldering iron that was rated 30watts and 230 didn't do much if you were running it at only around 1/4 of its voltage. I don't know if the heater would be a good idea without the fan. You won't be running it at full power but it may still need the fan to be happy. Can you still buy halogen lamps there? Maybe on the used market? I'm sure just like here they used to be very common as portable work lights and for outdoor use. Made lots of heat and used lots of power so most people are now using LED's but that is what we want in this case.

[Cezar]

Electric room heater - analog - passes the exam perfectly when discharging a bicycle battery. A good way to keep the battery in good condition in winter - 800 W - in half an hour and we have a voltage drop of 1V ..

[MIKEinNC]

I recently purchased a 52v basic charger, as part of a BBSHD kit.
Unfortunately, it has a 3 prong barrel connector, rather than the XT60 connector I need to charge my Mighty Mini, or Wolf battery.
Do you have an adapter or, if I cut the barrel connector off, will I be able to splice two of the wires to an XT60 pigtail ?

[paxtana]

Yes if you cut off the end you can put XT60 on it

[MIKEinNC]

Thanks, Paxtana .
Just out of curiosity, what is the function of the yellow wire in the basic charger cord ?
Is it feeding back some sort of state of charge info from the battery, that my Luna smart chargers calculate without a third wire ?
When I use it, do I need to be more careful to unplug the charger immediately, once the battery is charged ?

[paxtana]

I doubt it goes to anything but I suppose I could be wrong. Just make sure you use a multimeter to get the polarity right for positive and negative and it should operate the same as when it had the other plug on it. You can't really get a three-pin mini XLR plug with only two wires in the cable so it probably just came like that.

[MIKEinNC]

Thanks again, paxtana.
The other two wires were red and black, and they tested out as + and - as expected.

[MarkS0000]

Luna - I'm hoping you can help me troubleshoot the capacity on my Wolf battery.

I've had this battery 18 months and put about 500 miles on it with a BBSHD on a fat bike running a mighty-mini ring. Most of my rides are only 3-4 miles round trip but 3-500 feet of climbing so I keep the battery in the 20-80% range. I've always felt I had to charge too frequently so I but a watt meter on it.

I have the following battery.
52-WOLF-GA-13.5-BLK LUNA FUSION: WOLF 52v 13.5AH GA - STEALTH BLACK

Battery charges to 58.7V
I had the Watt Meter on it for a longer ride where I used pedal assist and kept the load below 1000w.
I have a 47.89V reading on the Watt Meter which I calculate to be 35% capacity remaining or 65% used.
The Watt Meter shows me at .15KWH which I translate to 150 Watt Hours
I calculate the battery pack capacity at 52V X 13.5A = 702 Watt Hours
The 150/702 = 21.3%
The meter shows 3.42 AH consumed which I have as 25% of capacity consumed so not too far off the Watt Hours.

Based on the Watt Hours, these calculations would tell me that I should have used roughly 2x the watt hours to get to this level of discharge.

I know these numbers are not exactly precise but this seems like the capacity is too low. I know from experience that from what the display is showing if I run this much more it will hit the LVC and kick off. At this point I'd normally charge the battery back up to 80%.

If I'm mis-reading the gauge or wrong with some calculations I hope you can point that out or help me determine how to resolve if there is a capacity issue.

Thank you for the assistance!

[paxtana]

I would recommend to email support@lunacycle.com attn:seb so we can do further testing

[in7el]

Only had sur ron x for 2 weeks, yesterday the s'morning the battery was at 30% rode till 28% everything was fine and throttle worked. Then charged to 100%, took it off charger, then tightened front brake and turned on bike, then tried to ride bike and the throttle had no response like it's dead or something.

[paxtana]

If it powers on fine and everything lights up, then it is probably something simple like the e brakes, kickstand sensor etc. There is a step-by-step guide on the knowledge base. https://electricbike.com/forum/forum...roubleshooting

[in7el]

it powers on fine and everything lights up, and I even loosened the front brake back to where it was and still no response from the throttle. what else should I do with the ebrakes.

[paxtana]

If you are still having issue please email support, but the step by step guide is fairly straightforward