Luna Wolf Pack battery documentation

[paxtana]

That's awesome, what kind of 3d printer did you use?

[EL34]

I 3D printed several battery supports to give the Luna Wolf battery a better footprint on the Fat Bike carbon frame.
I did not trust the two aluminum water bottle mounts on the carbon frame.
The battery now has 5 support areas that follow the radius of the carbon frame


Check out the YouTube video here

[paxtana]

Yes, a protective cap would be good, a dab of dielectric grease would be helpful as well. I would recommend Permatex 81150.

[rkey]

Thanks Paxtana, That also reinforces how important it is to have a protective cap on the XT60.

I will draw power from the XT90.

[paxtana]

It would not be advisable to pull power from the xt60. It bypasses both LVC protection and more importantly, short circuit protection.

[rkey]

Looks like a nice improvement on the already great V1 wolf packs. I really like the extra connectors on the V2.

I own a V1 pack and am curious for both the V1 and the V2 packs is it OK to draw limited power (50W or less) from the charge connector (XT60) on the Wolf packs.
I would like to add an LED light to an Ebike and the existing XT60 connector would be convenient.

I realize this might bypass the discharge low cutoff. Also ti is possible that depending on the BMS switch (fets) configuration it might not like having current flow out of the battery through the charging port.

The obvious alternative it to just add a Y cable to the battery output (XT90).

thanks

[paxtana]

If it's 56 it's not fully charged. I don't know what you mean by using what figure? Where are you getting this 56v reading? Do you have a multimeter?

[EL34]

My 52v wolf is 56 volts when fully charged
So do I use the 52 volt figure of the 56 volt figure?

[paxtana]

You calculate SOC from pack voltage

[EL34]

Excellent. Thanks for the link. That helps a bunch
So 41-42 volts lowest discharge voltage

I see info here on low voltage cut off limit - 39 volts
But I am not seeing High voltage charge cutoff figures

https://electricbike.com/forum/forum/knowledge-base/batteries-aa/55484-battery-documentation-master-repository

I don't have a smart charger, but I do have a watt meter on my charge and can monitor charging voltages
Do I use the charging voltage to calculate when to cut off the battery charging if I am not charging to 100%?
Or use the 52 volt wolf pack voltage and calculate the % from that?

[paxtana]

The battery management system will prevent you from discharging the battery past the point of being unsafe. This is generally around 41-42, depending on the amount of sag. At that level you are effectively at 0% since any meaningful amount of current drain will cause voltage to sag below low voltage cutoff.

As far as the lowest level for ensuring the longest battery life, you can probably triple the number of cycles from the pack if you do not take it below 20% or above 80%.

For more info on this click here https://electricbike.com/forum/forum...ter-repository

[EL34]

What is the safest and lowest level I can discharge my Wolf pack?
Lowest voltage?
Lowest %
Thanks

[paxtana]

Only charge via the XT60. Charging via the XT90 would bypass the BMS which we would not recommend (updated the above documentation with a FAQ covering these questions. These questions/answers will be deleted in a few days as they have been incorporated into the doc, just a heads up)

[HIGHVOLTAGE]

Yes, you can have them both connected. XT60 caps can be bought off HobbyKing. https://hobbyking.com/en_us/xt60-cha...___store=en_us

[cigret1]

I have the first Luna wolf pack which has two pig tails coming out out of the battery for motor and charger connection. My question is can the battery be connected to the motor while connecting the charger? Also is there a cap for the xt60 when I’m not charging the pack and riding in the elements?