2010 450h - battery check (scan tool)
12-30-20, 09:49 AM
#1
10th Gear
Thread Starter
2010 450h - battery check (scan tool)
I have almost 200,000 km (124k miles) on my (made in Japan) 450h. If you read posts and watch Youtube videos, the claim is that the batteries in the hybrids last 9-12 years and that age is more important than mileage. There are certainly (many) cases where these hybrids have lasted much longer (and also gone long distances) on the original battery. Mine is running fine but (despite some uneasy feelings) I wanted to find out the state of the battery.
I used an OBD2 Device, the Dr. Prius app and the approach that I found on https://artsautomotive.com to check out my battery. This basically involves putting the battery under stress (discharging) and then checking for the amount of difference between the highest and lowest battery module voltage readings. Another indicator is how long it takes to discharge. I was pleased to find that the voltage difference was normally under.3V with one spike up to .35. According to Art's info, that seems to be very good. He shows .2V difference as excellent and 1.2V as the point where the battery is finished. It took about 5 minutes to discharge from 61% to 41% (when the ICE started up). Thus, I am very happy with the results. Heat is a significant factor in battery degradation but I'll have to wait until summer to see what the peak temp is.
I used an OBD2 Device, the Dr. Prius app and the approach that I found on https://artsautomotive.com to check out my battery. This basically involves putting the battery under stress (discharging) and then checking for the amount of difference between the highest and lowest battery module voltage readings. Another indicator is how long it takes to discharge. I was pleased to find that the voltage difference was normally under.3V with one spike up to .35. According to Art's info, that seems to be very good. He shows .2V difference as excellent and 1.2V as the point where the battery is finished. It took about 5 minutes to discharge from 61% to 41% (when the ICE started up). Thus, I am very happy with the results. Heat is a significant factor in battery degradation but I'll have to wait until summer to see what the peak temp is.
12-31-20, 06:56 AM
#3
Racer
I'm at 239,000km (142,000m) and 11.5 years of service so far on original battery.
12-31-20, 01:22 PM
#4
10th Gear
Thread Starter
Say you find out the battery was going bad, then?
At that point, I think that you start monitoring more often and start exploring the options and cost to do a battery refurb (or replacement). If some cells are going bad while others seem to be OK, then a selective replacement of cells may be OK. To get a whole battery pack installed by Toyota is expensive and probably not justified for an older vehicle. My understanding is that Panasonic doesn't sell replacement battery cells for the Toyota batteries because of their agreement with Toyota. Thus, replacement cells are used so they won't provide the same long life as the initial new cells.
With respect to observing the differences in module voltages, you will see a greater difference when the battery is under stress (discharging) so that is more meaningful than observing the differences under normal operation.
It would be interesting to see the results for older 450's or other Lexus/Toyota Hybrids like the 400h to see if they are still getting good results after 15 or 14 years (or longer).
At that point, I think that you start monitoring more often and start exploring the options and cost to do a battery refurb (or replacement). If some cells are going bad while others seem to be OK, then a selective replacement of cells may be OK. To get a whole battery pack installed by Toyota is expensive and probably not justified for an older vehicle. My understanding is that Panasonic doesn't sell replacement battery cells for the Toyota batteries because of their agreement with Toyota. Thus, replacement cells are used so they won't provide the same long life as the initial new cells.
With respect to observing the differences in module voltages, you will see a greater difference when the battery is under stress (discharging) so that is more meaningful than observing the differences under normal operation.
It would be interesting to see the results for older 450's or other Lexus/Toyota Hybrids like the 400h to see if they are still getting good results after 15 or 14 years (or longer).
12-31-20, 10:51 PM
#5
Say you find out the battery was going bad, then?
At that point, I think that you start monitoring more often and start exploring the options and cost to do a battery refurb (or replacement). If some cells are going bad while others seem to be OK, then a selective replacement of cells may be OK. To get a whole battery pack installed by Toyota is expensive and probably not justified for an older vehicle. My understanding is that Panasonic doesn't sell replacement battery cells for the Toyota batteries because of their agreement with Toyota. Thus, replacement cells are used so they won't provide the same long life as the initial new cells.
With respect to observing the differences in module voltages, you will see a greater difference when the battery is under stress (discharging) so that is more meaningful than observing the differences under normal operation.
It would be interesting to see the results for older 450's or other Lexus/Toyota Hybrids like the 400h to see if they are still getting good results after 15 or 14 years (or longer).
At that point, I think that you start monitoring more often and start exploring the options and cost to do a battery refurb (or replacement). If some cells are going bad while others seem to be OK, then a selective replacement of cells may be OK. To get a whole battery pack installed by Toyota is expensive and probably not justified for an older vehicle. My understanding is that Panasonic doesn't sell replacement battery cells for the Toyota batteries because of their agreement with Toyota. Thus, replacement cells are used so they won't provide the same long life as the initial new cells.
With respect to observing the differences in module voltages, you will see a greater difference when the battery is under stress (discharging) so that is more meaningful than observing the differences under normal operation.
It would be interesting to see the results for older 450's or other Lexus/Toyota Hybrids like the 400h to see if they are still getting good results after 15 or 14 years (or longer).
01-01-21, 04:02 PM
#6
10th Gear
Thread Starter
I had a look in the 1st gen forum and found quite a few cases of older 400h's (mostly 2006 it seems) with 300,000 miles or so still running on the original battery.
I also had a look at the cost of getting a new / refurb battery from some supplier other than Lexus. Green Been Batteries seems to have a good rep. They provide the installation as part of the price and take away/re-use the old battery. They have installation available in a big part of the US.Canadians would have to take the vehicle across the border (but there should be some other local options). For a 2010-2015 Lexus, the price is $2549 USD. They provide a lifetime warranty.
I also had a look at the cost of getting a new / refurb battery from some supplier other than Lexus. Green Been Batteries seems to have a good rep. They provide the installation as part of the price and take away/re-use the old battery. They have installation available in a big part of the US.Canadians would have to take the vehicle across the border (but there should be some other local options). For a 2010-2015 Lexus, the price is $2549 USD. They provide a lifetime warranty.
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zmel (01-03-21)
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02-17-21, 10:28 PM
#9
This is something I was curious about. I did a long drive with an OBD2 scanner (BlueDriver) displaying the State of Charge for the traction battery. No matter how hard I tried to charge it up with coasting and braking, the highest number I got was 79.6%. Curious what OP is seeing on their RX.
2010 RX450h
44,700 miles.
2010 RX450h
44,700 miles.
02-12-22, 11:31 PM
#11
Driver School Candidate
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I had a look in the 1st gen forum and found quite a few cases of older 400h's (mostly 2006 it seems) with 300,000 miles or so still running on the original battery.
I also had a look at the cost of getting a new / refurb battery from some supplier other than Lexus. Green Been Batteries seems to have a good rep. They provide the installation as part of the price and take away/re-use the old battery. They have installation available in a big part of the US.Canadians would have to take the vehicle across the border (but there should be some other local options). For a 2010-2015 Lexus, the price is $2549 USD. They provide a lifetime warranty.
I also had a look at the cost of getting a new / refurb battery from some supplier other than Lexus. Green Been Batteries seems to have a good rep. They provide the installation as part of the price and take away/re-use the old battery. They have installation available in a big part of the US.Canadians would have to take the vehicle across the border (but there should be some other local options). For a 2010-2015 Lexus, the price is $2549 USD. They provide a lifetime warranty.
I have a 2010 Lexus RX450H and my battery gave out at 230,000 KM. I heard from a mechanic friend that refurbs are unreliable but the reviews online beg to differ so i really don't know what to tell you other than to be careful with your supplier. Nonetheless I'm just as curious as the rest of you
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