|
Scion FR-S / Toyota 86 GT86 General Forum The place to start for the Scion FR-S / Toyota 86 | GT86 |
|
Thread Tools | Search this Thread |
06-08-2023, 06:16 PM | #1 |
Meow
Join Date: Aug 2017
Drives: GT86, Volvo 996
Location: France
Posts: 541
Thanks: 323
Thanked 453 Times in 240 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
Battery power draw
Hi everyone,
My battery seems to keep dying on me quite often. I measured the power draw with an amp meter that, upon connection, shows 200+ma of power draw and then slowly drops over a minute or two to eventually stabilize around 40-45ma draw. Is this a normal value? Or should I further investigate what's using power when the car is shut off? BR, Alex |
The Following User Says Thank You to alex87f For This Useful Post: | humfrz (06-10-2023) |
06-08-2023, 06:44 PM | #2 |
Senior Member
Join Date: Aug 2014
Drives: 2013 FR-S
Location: Northwest Iowa
Posts: 7,358
Thanks: 454
Thanked 4,548 Times in 2,950 Posts
Mentioned: 59 Post(s)
Tagged: 5 Thread(s)
|
40 is pretty normal. How old is battery? Is the alternator working properly?
Sent from my KB2007 using Tapatalk |
The Following 2 Users Say Thank You to Ashikabi For This Useful Post: | NoHaveMSG (06-09-2023), soundman98 (06-08-2023) |
06-09-2023, 08:33 AM | #3 |
Meow
Join Date: Aug 2017
Drives: GT86, Volvo 996
Location: France
Posts: 541
Thanks: 323
Thanked 453 Times in 240 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
Battery's 3 years old. It's a namebrand 60Ah one so it should do OK.
Alternator is showing 14+ volts under charge so that seems OK. But whenever I leave the car to sit for over 2-3 weeks, it won't crank. I can hear the starter click, but that's it. Either I'm not reading the right draw values, or my battery doesn't have the advertised capacity anymore, 60Ah should last me two months with a 40ma draw. |
06-09-2023, 08:59 AM | #4 | |
Senior Member
Join Date: Aug 2014
Drives: 2013 FR-S
Location: Northwest Iowa
Posts: 7,358
Thanks: 454
Thanked 4,548 Times in 2,950 Posts
Mentioned: 59 Post(s)
Tagged: 5 Thread(s)
|
Quote:
Sent from my KB2007 using Tapatalk |
|
The Following User Says Thank You to Ashikabi For This Useful Post: | humfrz (06-10-2023) |
06-10-2023, 08:45 PM | #5 | |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 30,060
Thanks: 29,120
Thanked 32,202 Times in 16,572 Posts
Mentioned: 709 Post(s)
Tagged: 2 Thread(s)
|
Quote:
Also, you may want to have the battery load tested to see if it has a weak cell. My 9 year old battery seems to get lazy every few months, so, I zap it with a battery charger for a few hours and that seems to perk it up for a few months. I only drive my car for about a dozen miles 2-3 times a week. |
|
The Following 2 Users Say Thank You to humfrz For This Useful Post: | soundman98 (06-10-2023), Ultramaroon (06-11-2023) |
06-11-2023, 02:42 AM | #6 | |
Proud of BOXER
Join Date: Dec 2012
Drives: Subaru Boxer
Location: Bay Area
Posts: 8,151
Thanks: 7,083
Thanked 6,853 Times in 3,677 Posts
Mentioned: 199 Post(s)
Tagged: 0 Thread(s)
|
Time to start logging some more seat time, hum.
__________________
Quote:
|
|
The Following User Says Thank You to Clipdat For This Useful Post: | humfrz (06-18-2023) |
06-18-2023, 04:11 PM | #7 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 30,060
Thanks: 29,120
Thanked 32,202 Times in 16,572 Posts
Mentioned: 709 Post(s)
Tagged: 2 Thread(s)
|
|
The Following User Says Thank You to humfrz For This Useful Post: | Clipdat (06-18-2023) |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Dead battery - OBD-II power and cigarette lighter power? | lapsio | BRZ First-Gen (2012+) -- General Topics | 10 | 04-08-2021 08:22 AM |
Won't start, new battery, no power | sync32 | Issues | Warranty | Recalls / TSB | 5 | 02-07-2021 10:16 AM |
OBD Power draw when car is off | CSkap21 | Electronics | Audio | NAV | Infotainment | 1 | 03-07-2019 07:17 PM |
OBD power draw? | alex87f | Software Tuning | 6 | 12-30-2018 11:49 AM |
How much extra power can I draw from the fuseboxes? | Achilles | Electronics | Audio | NAV | Infotainment | 6 | 12-16-2014 03:17 AM |