Giant 625Wh vs 800Wh Battery

[emtbeast]

Hey

I've been riding the Reign E+1 2022 over 2,5 years now and have extensively recorded 101 trips during that time. I sold the 625 battery(worked perfectly) and so I have nothing left to compare with, so I would like to share this data with those who might need it.


A bit of information about the bike, everything is original except for the handlebars (Oneup), brake discs (Galfer), chain (Shimano XT with over 3800 km on it) and a new rear tire (DHF 2.5 WT EXO+) since April 2024. In July 2023 the motor was also changed under warranty.

The data is recorded in two Excel files and contains an extensive amount of data like outside temperature, tire pressure, average consumption, speed, trail conditions, ride notes, motor settings, etc... One file is for the 625Wh battery and the other for the 800Wh battery.
For each battery the data is presented in the Metric or Imperial standard, which suits anyone better.
The 625Wh battery has 66 recorded trips, the 800Wh battery has 35 recorded trips.

Some information for clarification:

1. The Average slope incline parameter is based on the Ascent distance and not the Total distance.

2. The Excel files are too large and extensive to read on a cell phone, so you need a laptop or a tablet.

4. Both Excel files are in a .Zip format, because the site does not allow Excel files directly.

5. The max nominal battery size/capacity are written on the battery under the tech specs so the 625(name) is in reality 621 Wh and the 800(name) is in reality 811 Wh.
To have a solid basis for the comparison the nominal max sizes were used in the math for the comparison and analysis.

The Excel tables are hard to read on the cell phone so attached here are also two(metric and imperial) images with a direct comparison of the two batteries with the average values of all of the recorded parameters.





As a bonus, a snapshot of one of my longest rides just before the descent,
22% remaining after 2181m altitude gain.


Hope this helps someone and happy ebike riding. ️

 

[ceromx]

Nice data collection and analysis! I was trying to correlate the consumption with the engine setting but could not really found a result. What is in you opinion the lower consumption setting?

 

[emtbeast]

Nice data collection and analysis! I was trying to correlate the consumption with the engine setting but could not really found a result. What is in you opinion the lower consumption setting?

Not really sure what exactly your question is, but I myself weigh 90kg. In my testing I found that reducing the torque to 70Nm, was still enough for me to comfortably climb everything and it also gave me better range overall.

For my personal settings, I have 70Nm overall, I increased the the Assistance Eco mode to 100% and decreased the Power mode to 350%, and for the Launch settings I run them at a happy medium 3, 4, 4, 4, 5.

These settings give me a happy balance of power and range, the main thing I took into account was my weight and the average trail incline where I mostly ride.

Maybe this chart I made for myself when deciding between fullfat and light ebike can help finding the best torque settings for your weight and average incline where u ride.

Basically the chart shows you how much Torque you loose just sitting on the bike on a given incline. You want the motor providing you with a minimum at least the double of what you loose. The weight shown on the chart is system weight(rider+bike). Sorry for the bad quality(screenshot).



For someone lighter the settings could probably be even lower.

If I go for an all day ride and want maximum range and I know the average incline will be no more than 6%, then I reduce the Eco and Tour setting to 60Nm, and the rest to 70Nm.

I also did some testing before the battery comparison article and before man could set the motor torque and launch in the app.
These were my consumption (Wh/100m altitude gain) findings on 10km average 8% climb.

50 % - 17 Wh/100m
75 % - 23 Wh/100m
100 % - 26 Wh/100m
125 % - 28 Wh/100m
150 % - 30 Wh/100m
175 % - 33Wh/100m
200 % - 35 Wh/100m
250 % - 37 Wh/100m
300 % - 39 Wh/100m
350 % - 40 Wh/100m
400 % - 42 Wh/100m

It would be interesting to repeat the test with 70Nm set, maybe I will do it in the next season.

 

[ceromx]

Thanks for the input, I also noticed that moving the max torque down to 70Nm easily increase the range without impacting much performance. When I compare your consumption to mine they are anyway very different: in my enduro rides where I'm within 40-50 wh/100m mostly on mode 3 (std setting).

 

[emtbeast]

Thanks for the input, I also noticed that moving the max torque down to 70Nm easily increase the range without impacting much performance. When I compare your consumption to mine they are anyway very different: in my enduro rides where I'm within 40-50 wh/100m mostly on mode 3 (std setting).

Wow that is realy high, did u do all the motor updates, there were some updates that made the consumption go realy bad.

I use the mode controller a lot, I mean a looot, switching modes appropriately to the terrain incline, I also rarely go to full power mode, so my average assist percentage is usually no more than 200%. I also have the Fox X2 that has a climb(firm) setting, when climbing I use it as it aids the flow and lowers the consumption.

Tires is where a happy medium is needed for good climbing and good consumption, I usually drop the pressure for DH on the top of the mountain, for climbing I have it a bit higher.

The third factor that could effect your higher consumption is terrain, for example I usually never ride when it's to sloppy and wet outside, I hate it actually, but I can imagine, in those conditions the motor because of reduced grip has to work much harder.

 

[ceromx]

Just 1 last question. Do you calculate the climb consumption accounting the total battery consumption for the ride or only the battery drop on for the climb?

I've done all updates on mine

 

[emtbeast]

For the battery comparison article on this thread the total battery consumption of the ride was used for the calculations.

For the testing numbers for all Assistance levels in my previous anwser only the battery drop on the climb was used for the calculation.

One distinct difference for my lower consumption could be that I don't use Assistance on flat terrain unless it's really windy or I'm really tired.
There are two reasons for this, I like to warm up getting to the trailhead(start of climb) and that's just perfekt for it, the other reason is that the Giant's motor is among the thirstiest on flat terrain.

 

[ceromx]

Thanks for the detailed analysis very professional!

 

[Madonas]

I have a Reign e+3 with an 800wh battery. Since last February I have put 4400 km on it. It still says 97% healthy.
I do 60 % road work on the bike with 40% flow trails.
Normally a higher power modes to can get anywhere from 75 to 100 km range with a bit of climbing.

When hypermilling by using low power levels I can sometimes get indications of 130-150 km ranges without significant hill climbing.

You are right this motor is one of the most inefficient motor to use on flat .

I like the fact for that the battery isnot degrading as fast as a 500wh batteries in shimano system I have. Those two batteries degrades to 85% and 81% health very quickly.