Sondors original Issue

[Rm777]

The bikes LCD Display and light up throttle will be low after 4 miles of light assist 3. I know the level changes while under load, but the bikes battery reading is incorrect to the battery in my bike. My bike is a sondors original with 4 month old battery. And the bike would be “dead” but 3/4 of the lights on the battery are on when I click it…as shown below...

 

[indianajo]

How old is "original" Sondors? A decade? More?
Every bike controller I've bought has had garbage for main electrolytic capacitors. Ie if I unplugged it from the battery, let it sit a minute, then plugged it back in, there would be a big spark. Charge leaked away in 1 minute. None of my ebike systems were from majors like Bosch or Shimano.
I upgraded this garbage by replacing the main caps, 470 uf @ 50 v, with industrial caps rated for service life of >3000 hours. No spark after a couple of minutes unplugged. At 10 years all the little e-caps would be suspect, too. The good parts cost ~150% of the price of the garbage 500 hours caps at retail. Ecaps have a + label near one pin, or a minus in balls label near the other pin.
I buy such caps from newark or digikey. Don't buy at a local electronics parts store, I got nothing but garbage grade from them before the debit card was invented and newark allowed individuals to purchase from them. Similar garbage e-caps are installed in consumer grade electronic devices of all types. The HDTV converters from ***-Mart, a year. *-Mart, 2 years. Stellar HDTV converters fail after ~ 5 years. Legend, Element, Vizio no-name flat screen TV's, 18 months. LG or Samsung, 5 years. Professional PA amps & mixers from Peavey, Crown, QSC, 15 years operated 24/7.

 

[Rm777]

How old is "original"? A decade? More?
Every bike controller I've bought has had garbage for main electrolytic capacitors. Ie if I unplugged it from the battery, let it sit a minute, then plugged it back in, there would be a big spark.
I upgraded this garbage by replacing the main caps, 470 uf @ 50 v, with industrial caps rated for service life of >3000 hours. No spark after a couple of minutes unplugged. I buy such caps from newark or digikey. Don't buy at a local electronics parts store, I got nothing but garbage grade from them before the debit card was invented. Similar garbage e-caps in consumer grade electronic devices of all types. My Stellar HDTV converters fail after ~ 5 years. The HDTV converters from ***-Mart, a year. *-Mart, 2 years. Legend, Element, Vizie no-name flat screen TV's, 18 months. LG or Samsung, 5 years.

I thought original was the model name. But is the capacitor upgrade, an unscrew unplug and replug in job? Or does require soldering and more ?

 

[indianajo]

Requires unplugging, removing the case (if possible, some controllers displays and throttles are potted), unsoldering, resoldering, reinstall. Warning, solder splashes especially unsoldering, wear safety glasses. Use rosin core solder, 60/40 or 65/35.