Positive and Negative contacts located?

[Nvreloader]

Guys
I have a new 2021 Wart Hog MD750 bike with dual batteries, 48/15ah.
the display is set up for percentage of remaining battery during use.

I have notice something weird going on with the percentage readings that I check every day.
Charged the battery up 100% (1st recharge on a new battery), display read 100%,
the next day it reads 99%, the day after that reads 98%, the next day it reads 97% and so on.
It is down to 94% today......?

What is going on?? The display is turned off along with the head lite, no battery is being used.
I haven't a clue why, I am losing the battery charge.

Where are Pos & Neg contacts on the battery\ I have 4 slots/contacts points,
and the end of the battery? There is NO + or - sign around any contact slot.

I would like to check the voltage with my volt meter etc.

Your thoughts and suggestions.....
Tia,
Don

 

[Nvreloader]

It's been 10 days,
and I have been checking the battery percentage every day,
today I went for a ride and the starting percentage was 88%,
which means that I am losing 1 percent per day with the bike sitting there,
and all systems are shut off.

I just finished riding 10 miles and the ending percentage is at 76%,
I didn't use any power anywhere, it was Shank's Mare = Leg power.........LOL
Which means that I use 12% for that 10 Miles?

I did have the display on, so I could check the mph,
and used Eco mode and the first 3 gears (smallest),
for the hard top, gravel and deep soft sand dunes.

It don't seem right, IMHO, I don't trust the display reading etc.

Your thoughts and suggestions..........
Tia,
Don

 

[harryS]

Why not put your meter on the slots until you identify the power terminals. Don't short circuit anything. If it's a digital meter, it won't blow up on reverse polarity or overvoltage, but just put it on the right scale, probably 200V DC?.

Now I don't know what Bikonit is measuring as far as capacity, Maybe their algorithm, is flawed. If you're looking at voltage, expect that to drop about 1% a month.

 

[Nvreloader]

Harry
Thank you for the info formation, I have to try that and see what is going on/

I just finished a second 10 mile trip, all peddle powered and the percentage is down to 64%,
used the ECO model and the 4 smallest gears, av speed of 14mph, 12% for that 10 miles..........

I am getting a 1% drop per DAY, right now.
I am NOT sure of the voltage, as I am going by the display readings only,
that is why I asked about the Pos and Neg terminals on the battery,
so I can test it etc.

I got to be doing something wrong, I just haven't figured it all out, yet.
Very Very new to this Ebike game............. Only have 30.3 miles on this New bike,
in 3 rides...........LOL
Thanks,
Don

 

[rich c]

Follow the wires from the controller. Usually the biggest red and black wires on the bike.

 

[Nvreloader]

Thanks Rich
But that don't help me much, all the wire/cables on this bike are routed thru the main frame etc,
and I don't know where the controller is located, or what it looks like,
and I am not going to tear it apart at this time................LOL
I only have 30 miles on it, being it is BRAND NEW.
Tia,
Don

 

[harryS]

They may have set up the display wrong, or didn't set it up at all. You should be asking the seller what's going on.

That said, when you remove the battery, there will be a power receptacle you can test, but you have to be careful. Lots of power/current there, and if your probe slips, it can do a lot of damage.

 

[Nvreloader]

Here is an update to the location of the Wart Hogs positive and negative locations on the end of the battery.
Have the battery lying with the contacts facing up,
the Positive slot is on the LEFT Hand slot and the Negative is the right hand slot.
There is 4 slots, reading from left to right =#1 slot = Positive, slots #2 and #3?? and #4 slot = Negative.

Also, IMO I believe that having a BAD top battery, it was causing problem with the bottom battery losing 1%,
per day. Since I have removed the top battery, my losses from the bottom battery have stopped,
same percent/voltage for several days now.

Hth's,
Don