Li-Ion Ebike Battery Charge Charts

Remember, ALL numeric charts show ballpark values that may be numerically correct, but no generic chart can match your individual cell characteristics, pack age or chemistry.  Those variables all cause shifts in the numbers here.  Read the notes on the chart for a little more detail.  Bottom line: cells degrade differently, but imperfect charts like this are still good baseline references.  Use these and teach yourself how to read the voltage gauge on your display screen.

Quite some time ago, I produced a series of charge status charts for a variety of common lithium-ion battery voltages.  They’ve become a fairly common link to help folks out on various Facebook groups who use these battery voltages in their ebikes.

I built them using Google Sheets, so they are not web pages, which I suppose has kept them from being widely linked in search engine results when people are looking at such things.

Here for the first time are direct links to the charts on a normal web page.

36 Volt (10S) Battery Charge Chart

The first link is to the lowest voltage:  36v.  Generally this is the lowest voltage you will find on a modern, commercial ebike.  Note that its called ’36 volt’ but really that is the ‘nominal’ value.  A 36v battery is actually fully charged when it is at 42.0 volts.

36v_Thumbnail.jpg
Click on the image above to be taken to the actual 36-volt battery charge chart.

48 Volt (13S) Battery Charge Chart

The next common size is 48v.  These batteries are fully charged at 54.6 volts.

48v.jpg
Click on the image above to be taken to the actual 48-volt battery charge chart.

52 Volt (14S) Battery Charge Chart

The next battery voltage is 52v and very common.  52v batteries will work on systems designed for 48v, and why is easier to understand when you become aware that a ’48v’ battery really tops out at over 54 volts.  A ’52v’ battery tops out at 58.8v, so it essentially lets you use a 48v system for a longer time at higher voltage levels that it is already designed to utilize.

52v.jpg
Take a guess what you are supposed to do to see the 52-volt battery charge chart.

60 Volt (16S) Battery Charge Chart

With a 100% charge voltage of 67.2 volts, when you have one of these you are getting into high voltage territory

60v.jpg
Yup.  Click it.

72v (20S) Battery Charge Chart

72v.jpg

Author: m@Robertson

I'm responsible for the day-to-day operations at my place of business: Leland-West Insurance Brokers, Inc. We do classic and exotic car insurance all across these United States. I'm also an avid auto enthusiast, a born again cyclist (i.e. an ebiker) and participate in medium and long range CMP and NRA sanctioned rifle competitions.

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