Martes B2 48volt 15mp 750watt electric bike
- Thread starter aggie
- Start date
indianajo
Well-Known Member
The only web page bing finds for the martes has a very short description. https://www.bikeandgo.co.uk/electric-bikes/martes-electric-folding-bike-far-tire-20-48v-500w/ It says the battery is 48 v 500 w. This is obvious ******** as bike batteries are sold in watthour sizes, not watts. If the battery produced 500 w for only 5 minutes the wh would be 41. The range would be about 5 miles. With this kind of **** being published I would take it that 54.2 max volts is also incorrect. 48v LiIon batteries reach 100% charge at 54.6 v. If your battery is not LiIon further research is required.
Most ebay chargers have a picture of the label, which shows the shutoff voltage. I personally only charge my 48 v battery to full voltage twice a year. The rest of the time I shut the charger off with a humble $10 AC timer. Then I measure with a voltmeter, aiming for 52.8 to 53 v or 90% charge. My battery is 5 years old, has about 400 charges.
My battery was sold with a 45 a 48 v controller, which means that it should be able to produce 2160 w. A 25 A controller should be able to produce 1200 W. The 500 w rating, if true, puts that battery in the flashlight category, not ebikes.
Most ebay chargers have a picture of the label, which shows the shutoff voltage. I personally only charge my 48 v battery to full voltage twice a year. The rest of the time I shut the charger off with a humble $10 AC timer. Then I measure with a voltmeter, aiming for 52.8 to 53 v or 90% charge. My battery is 5 years old, has about 400 charges.
My battery was sold with a 45 a 48 v controller, which means that it should be able to produce 2160 w. A 25 A controller should be able to produce 1200 W. The 500 w rating, if true, puts that battery in the flashlight category, not ebikes.
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