750wh Syncdrive Pro Range?

[Bordtea]

This is a little bit of a ‘how long is a piece of string’ question but interested to see what others are getting on a cross country/trail loop using modes 1/2/3.

I have a 2022 Reign E+0 and had to limp it home after just 35km/1300m ascent having not come out of mode 1-3 all day (predominantly in modes 2/3).

Whilst I’d usually put this down to cold temps and slightly wet/boggy terrain I did this with two friends today who were on Bosch Gen 4 driven bikes with 625wh using tour mode the whole day and their bikes outlasted the Reign. Makes me wonder whether they may be a motor issue. If anything the motor feels a little draggy and certainly not as smooth as the Bosch Motor was today.

Thanks!

 

[Rubinstein]

Sounds like you need to get down the gym mate
Sorry, but seriously 35k with 1300m on a 750 is crap unless your eddie hall. I’ve got a trance and used to get 100km with 1300 on a 625 in the summer. This does drop dramatically in the winter to around 60km on the same route, but you’re on a 750 so should easily be beating that. Worth checking the app before you go to see the battery is at 100% and not just trusting the display on 5 bars

 

[Bad-Latitude]

I have a Reign with the 625wh and just did 21 miles (about 35km) with 3,493 feet of elevation in muddy / soft and rocky conditions. Ram the battery out in the last two miles. Normally I can do 25 miles (40km) in dry conditions and still have two battery bars remaining.

 

[John Cap]

E+2 (625wh battery):
I'm about 74 kg, with all my gear on. Also there is a cushcore in the rear which adds rotating mass.
Maxterra compounds, DHF front, High Roller DD rear.

Yesterdays ride, at 11 degr Celcius, on dry trails:
51% battery consumption during a 29 kilometer ride, with 852 total meters of ascend.
Attaching the graph of battery consumption and power levels, over time.
Most of the time on power level 3, a few stretches of using full power level 5* and level 4. Powering down to zero whenever coasting down on smooth connecting roads.

*which on Garmin, bike's power level 5 is shown as 7, and bike's power level 4 is shown as 5.

 

[Bordtea]

E+2 (625wh battery):
I'm about 74 kg, with all my gear on. Also there is a cushcore in the rear which adds rotating mass.
Maxterra compounds, DHF front, High Roller DD rear.

Yesterdays ride, at 11 degr Celcius, on dry trails:
51% battery consumption during a 29 kilometer ride, with 852 total meters of ascend.
Attaching the graph of battery consumption and power levels, over time.
Most of the time on power level 3, a few stretches of using full power level 5* and level 4. Powering down to zero whenever coasting down on smooth connecting roads.

*which on Garmin, bike's power level 5 is shown as 7, and bike's power level 4 is shown as 5.
View attachment 105797

Really useful comparison - thanks!

 

[jaggysnake]

ive got 800w and mines same , once had just 17 miles , maybe im old

 

[Madonas]

I have a Giant reign e+3 with an 800 wh battery.
In order to get range out of these bikes I changed the chainring to a 32 tooth and for the first three mode use only 20 NM, 30 ,nm and 40 nm with a launch tuned to low to moderate. This is good enough to climb most hills but at a considerably slow pace than full boost.
I got 17.84 km and climbed 440m using only 21% battery from a full charge. Calculating full range would be 17.84 ÷21 x 100 =84 km ( 50 plus miles , climbing 440÷21 × 100= 2095 m ( 6874 ft). I don't expect battery to discharge at a l7near rates you can get a bit less range and climb than calculated

.

 

[trailaddict]

Make sure you don't use Auto-Mode and turn down Launch as it eats up battery quickly.
I'm getting 1900m of ascend out of the 750Wh battery at 20+ Degrees, with the 800W even more as it has 22700 Cells.
My Settings:

Mode	Support	Torque	Launch
1 - Eco	100	50	2
2 - Tour	150	60	3
3 - Active	200	70	4
4 - Sport	300	85	5
5 - Power	400	85	6

Uphill I'm using mostly Mode 2 and 3, and 4 & 5 only for steep technical terrain.

 

[Acmac999]

Sorry to reopen this thread but I’ve just been seeing a drop in performance with my 625w battery. Wondering:

Can it be the cold weather?

It only charged to 95% overnight not sure what’s up with that…

Will the giant bike shop have any other analytics for the battery? The “health” is 98% but that’s not really helpful given the performance I’ve observed.

 

[jeanmarc]

I just revisited my data on battery usage in cold weather vs normal summer days.
I’ve used 30% more battery on average, up to 40% if I stayed outside for a longer period of time. (cold days meaning +/- 3℃)

 

[Acmac999]

I just revisited my data on battery usage in cold weather vs normal summer days.
I’ve used 30% more battery on average, up to 40% if I stayed outside for a longer period of time. (cold days meaning +/- 3℃)

This was more like “cool” 10-15 degrees

 

[jeanmarc]

This was more like “cool” 10-15 degrees

Can't say, for some reason, I don't have much rides in these temperatures?? The little I have show no difference.

 

[Acmac999]

Can't say, for some reason, I don't have much rides in these temperatures?? The little I have show no difference.

Thanks for your reply… my guess is the battery is degraded far more than the 98% on the app

 

[Rando_12345]

Very unscientific addition: when I ride with my watch telling me my battery percentage, the bike does a few km at 100% before starting to drop to 99%. Then it goes down much more linearly.

It could be partially that the difference between 96% charge and 100% charge is actually much larger than the expected 4%. Typically Giant bikes take forever to charge the last 10%, so there is probably some cell balancing going on etc.

 

[Madonas]

I have 2400 km on a 800wh battery with 22 cycle charges. It charges to 98% health.
So realistically the battery is 2% less or 800 wh - 16wh = 784wh .
I have 22000 km on a shimano system with two batteries the oldest battery ,5 years plus charges to 80% and the newest one has degraded to 83%.
Batteries are a consumable item and degrade at various rates in conjuction with various operating conditions.
The new giant 800wh battery offers good range if the motor is tune to lower power. See my other posts on how to tune the motor to achieve maximum range for flat or hill climb biking.

 

[Acmac999]

I have 2400 km on a 800wh battery with 22 cycle charges. It charges to 98% health.
So realistically the battery is 2% less or 800 wh - 16wh = 784wh .
I have 22000 km on a shimano system with two batteries the oldest battery ,5 years plus charges to 80% and the newest one has degraded to 83%.
Batteries are a consumable item and degrade at various rates in conjuction with various operating conditions.
The new giant 800wh battery offers good range if the motor is tune to lower power. See my other posts on how to tune the motor to achieve maximum range for flat or hill climb biking.

When the battery health is say 98%, the battery still should read 100% charged after a long charge. It always charges to the full capacity 100% even if that’s less than when new. That behaviour is now different.

 

[Madonas]

Shimano systems , show a decrease in range on their bike displays, at least those of 2020 .
So my oldest battery will show 80 km range (80 %healthy)after 4 1/2 years of use
When new these batteries will show 100 km range . 20 % decrease in range.
100 % capacity / range of an old battery is not the same as new 100% healthy battery range.
As the Battery Management System mo itors individual cell health it decreases final charging voltage of all cells to that of the weakest cell , ie balancing the charge on all the cells. If the BMS
Just charged all the cells to maximum voltage.
The degradation my oldest battery seem to slow quite a bit when at 83% health.

 

[Madonas]

INTERESTING THING HAPPENED to the 800 wh giant battery after the latest ride control update a few weeks ago
The battery showed 98% battery health when fully charged after 2600 km on the bike and about 25 charge cycles. This is before the update.
After the update charging the battery for tte first time after update showed 100 % charge and 100 % battery health and 25 charge cycles. Basically back to new condition
Has anyone else seen an improvement in 800 wh battery health after the recent giant update?

 

[jeanmarc]

I can tell it didn't change anything for the 625Wh... 97% health before and still 97% after the update.

 

[Madonas]

Very strange I have an old 2019 shimano steps system and the battery's I use in thus system degrade about 1% / 750 - 1000 km run. Eventually degrade to 81 % and then slower after that.
Never once did the battery health improve in the shimano system.