Battery and electronics to mate with Panasonic front hub motor.

Zebede

Finding my (electric) wheels
Aug 5, 2016
10
0
76
West Berkshire
The battery is shot on my Gazelle C7 HF but the front wheel Panasonic motor is fine.
Any recommendations for new battery and electronics to fit and save me scrapping great bike.
Cheers
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,057
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West Sx RH
How many wires for the motor connector (show us a pic of connector).
Is the PAS a TS set up or cadence ?

If the bikes uses comm's then replacing every thing bar the hub to a generic set up will cost about £250 - £350 .
A KT controller kit would be the best control system to use and a chance to upgrade the bike to 48v if already 36v.
 
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Nealh

Esteemed Pedelecer
Aug 7, 2014
21,057
8,604
61
West Sx RH
One can't mate a controller with the bar display so one will have to buy a controller and display together.

If one buys a cheap controller /dsiplay kit £30 - £40 then one will rely on crappy speed control and no user input to control the power.
Spend £75 - £100 on a KT controller/display kit and one will gain nice current control power with user freindly control of how much power to use with five assist levels.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,057
8,604
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West Sx RH
Memory serves me right that the PAS is TS.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,282
3,363
Telford
The battery is shot on my Gazelle C7 HF but the front wheel Panasonic motor is fine.
Any recommendations for new battery and electronics to fit and save me scrapping great bike.
Cheers
It's been done a couple of times before. Use Google to search the forum. I think it wasn't as straight-forward as a normal motor, but I can't remember why.
 
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Reactions: Nealh

thelarkbox

Esteemed Pedelecer
Aug 23, 2023
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oxon
Trace the cable from the motor to its First connection, disconnect and photograph the motor end to validate its a standard 9x or 3x connection configuration. (probably 9x) .

while the basic 4x pin battery connector initially looks promisingly simple, the "D" labelling on the 2 thinner wires indicate data communication which is not a good sign for simple generic battery replacement, making a complete system overhaul to power the motor more likely the solution.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,282
3,363
Telford
Trace the cable from the motor to its First connection, disconnect and photograph the motor end to validate its a standard 9x or 3x connection configuration. (probably 9x) .

while the basic 4x pin battery connector initially looks promisingly simple, the "D" labelling on the 2 thinner wires indicate data communication which is not a good sign for simple generic battery replacement, making a complete system overhaul to power the motor more likely the solution.
There was a KTM that used a Panasonic hub motor. It also had those two thin wires on the connector, but they weren't present on the other side, so were probably only used for battery diagnostics. OP needs to check what's on the matching connector. Sometimes they're used for a light on the end of the battery, and sometimes for remote switching, so it's not a disaster yet, but the D you spotted is worrying.