Ebike battery maintenance questions.

[SweetTrade324]

I have. New Chinese 72v U004 battery with hopefully LG cells. I’m new to ebike I’ve had one 48v and I think I messed up the battery as it has short life now. What’s The best tips and tricks you all have? Is the Charge to only 80-90% true? Excuse my stupidity but what is the voltage of 80-90? What’s the lowest I can safely go on the battery in terms of volt? Should I wait until almost empty to charge? Or charge every ride? Sorry again for the noob questions but any help would be appreciated.?

 

[Dave Rocks]

72v 80-90% = 79.2v & 81.6v

 

[username00101]

if it gets charged to 100% the life of the battery is barely 1/3 as long lasting as if charged to 80%.

 

[SweetTrade324]

What is the average life expectancy of a Chinese made battery like this?

 

[harryS]

What is the average life expectancy of a Chinese made battery like this?

Is it this one from UPP? Reviews on the generic cell version (not LG or Samsung) are pretty unnerving. Strap brackets break off. Packs fail.

I've had mixed results from UPP. Some batteries with quality cells have done well, but I found out one I had purchased with Samsung cells had problems a month after I gave it to my sister, She never told me til 2 years later. I think UPP is one of the more reliable of the chinese sellers, but they still have mediocre QC.

Amazon.com: Customer reviews: Unit Pack Power UPP Offical 72V Ebike Battery - Triangle Battery 72V for Electric Bike Bicycle - Lithi-um Ion Battery 72V 20Ah 3000W 2500W 2000W 2500W 3000W 3300W

Find helpful customer reviews and review ratings for Unit Pack Power UPP Offical 72V Ebike Battery - Triangle Battery 72V for Electric Bike Bicycle - Lithi-um Ion Battery 72V 20Ah 3000W 2500W 2000W 2500W 3000W 3300W at Amazon.com. Read honest and unbiased product reviews from our users.

www.amazon.com

 

[rich c]

if it gets charged to 100% the life of the battery is barely 1/3 as long lasting as if charged to 80%.

That's curious. I'm riding on Bosch batteries built in 2015 and I've only done full charging over it's entire life.

 

[SweetTrade324]

Are there chargers that automatically cut off at 80%? Or a good one with a read out so I can tell you can recommend?

 

[harryS]

Price a Grin Satiator for an adjustable charger.
.
You could also buy a wattmeter and place it between the charger.battery, Watch the voltage, and when it's close, shut off charging,

RC Watt Meter DC 60V/100A Digital LCD Balance Voltage Battery Power Analyzer Wattmeter Tester Checker Watt Volt Amp Meter: Amazon.com: Tools & Home Improvement

RC Watt Meter DC 60V/100A Digital LCD Balance Voltage Battery Power Analyzer Wattmeter Tester Checker Watt Volt Amp Meter: Amazon.com: Tools & Home Improvement

www.amazon.com