Anyone else kill their battery with the trunk? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

nocwage · 07-21-2014, 08:24 PM

Twice now I've walked out to my car, pressed the unlock button and nothing happened.. The first time was like a week after I got the car and I thought "oh shit it's broken already" and then after a ton of checking I noticed the trunk was JUST ever so slightly popped open. (It's surprising how hard it is to tell at a glance)
Well it just happened again, and this time with my fancy LiFePO battery

Here's to see how well they take getting COMPLETELY drained and recharged..

Debating either leaving the trunk disabled OR if I can get away with just removing the bulb from the trunk..

radroach · 07-21-2014, 08:29 PM

Why are you using a LiFePO battery?

CruiseZen · 07-21-2014, 08:30 PM

Had that happen to me. Now I always make sure to check the trunk is securely closed before I walk away.

nocwage · 07-21-2014, 08:49 PM

Quote:

Originally Posted by radroach

Why are you using a LiFePO battery?

Because unlike other lightweight batteries it cranks like stock.
And it's baller.

nocwage · 07-21-2014, 08:50 PM

Quote:

Originally Posted by CruiseZen

Had that happen to me. Now I always make sure to check the trunk is securely closed before I walk away.

I am popping it with the key, I almost never use the trunk which makes it double annoying when this happens

But then if I disable the trunk it will be annoying not being able to pop it when I do want to..

sluflyer06 · 07-21-2014, 08:56 PM

Quote:

Originally Posted by nocwage

Twice now I've walked out to my car, pressed the unlock button and nothing happened.. The first time was like a week after I got the car and I thought "oh shit it's broken already" and then after a ton of checking I noticed the trunk was JUST ever so slightly popped open. (It's surprising how hard it is to tell at a glance)
Well it just happened again, and this time with my fancy LiFePO battery

Here's to see how well they take getting COMPLETELY drained and recharged..

Debating either leaving the trunk disabled OR if I can get away with just removing the bulb from the trunk..

Any half assed lithium cell or package should have low voltage protection that does not let it actually drain below a set voltage. Typically when you reach that preset limit it will been the circuit to protect the cell(s). Id ask the manufacturer and also check it with a multimeter.

quark · 07-21-2014, 09:34 PM

Had this happen to me also.

Swapped out the 5Watt light bulb (437mA) with a low power T10 LED (20mA).

With the LED and dash indicator the current draw is ~80mA, this will allow the light to be on for about 2 weeks with enough power left in the stock battery to start the car.

nocwage · 07-21-2014, 11:03 PM

Quote:

Originally Posted by quark

Had this happen to me also.

Swapped out the 5Watt light bulb (437mA) with a low power T10 LED (20mA).

With the LED and dash indicator the current draw is ~80mA, this will allow the light to be on for about 2 weeks with enough power left in the stock battery to start the car.

Awesome where did you order that from?

nocwage · 07-21-2014, 11:06 PM

Quote:

Originally Posted by sluflyer06

Any half assed lithium cell or package should have low voltage protection that does not let it actually drain below a set voltage. Typically when you reach that preset limit it will been the circuit to protect the cell(s). Id ask the manufacturer and also check it with a multimeter.

Shorai battery, I wish I had bought the earthX one since it HAS the over discharge AND charge controller ON the battery.
If this one is toast I will buy EarthX

litemup · 07-21-2014, 11:24 PM

Google is your friend. This one's on the autozone website. It's mine now. Get your own.

quark · 07-21-2014, 11:50 PM

Quote:

Originally Posted by nocwage

Awesome where did you order that from?

Got mine from a local electronics store.

The lowest power ones will be ~20mA, you can source from ebay

http://www.ebay.com/itm/Klaxcar-8701...8df2239&_uhb=1

The cre LEDs will be brighter but consume more power ~80mA

litemup · 07-21-2014, 11:58 PM

Quote:

Originally Posted by quark

Got mine from a local electronics store.

The lowest power ones will be ~20mA, you can source from ebay

http://www.ebay.com/itm/Klaxcar-8701...8df2239&_uhb=1

The cre LEDs will be brighter but consume more power ~80mA

Wait, I didn't read closely enough. If I get the 20mA bulb I can leave my trunk open for 2 months? Damn it!

quark · 07-22-2014, 12:14 AM

Quote:

Originally Posted by litemup

Wait, I didn't read closely enough. If I get the 20mA bulb I can leave my trunk open for 2 months? Damn it!

You will get about 10 days with that LED, (stock battery down to 30% capacity). Much better than stock bulb (totally dead in 4.5 days)

Lawnik · 07-22-2014, 12:18 AM

Yes

But I just took the bulb out and crushed it

With the Shorai charger it recovered quickly

Lol

07-21-2014, 08:24 PM	#1
nocwage MMTT Join Date: Aug 2013 Drives: 2019 Subaru BRZ Location: Ontario Posts: 130 Thanks: 7 Thanked 44 Times in 30 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Anyone else kill their battery with the trunk? Twice now I've walked out to my car, pressed the unlock button and nothing happened.. The first time was like a week after I got the car and I thought "oh shit it's broken already" and then after a ton of checking I noticed the trunk was JUST ever so slightly popped open. (It's surprising how hard it is to tell at a glance) Well it just happened again, and this time with my fancy LiFePO battery Here's to see how well they take getting COMPLETELY drained and recharged.. Debating either leaving the trunk disabled OR if I can get away with just removing the bulb from the trunk..

07-21-2014, 08:30 PM	#3
CruiseZen Senior Member Join Date: Jan 2014 Drives: 2014 Ultramarine 6MT FR-S Monogram Location: North Carolina Posts: 252 Thanks: 45 Thanked 78 Times in 57 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Had that happen to me. Now I always make sure to check the trunk is securely closed before I walk away. __________________ Borla axleback exhaust * mud guards * Michelin Pilot Super Sport tires * Opti-Coat * BRZ trunk lid liner * Rexpeed Wide Mirrors (heated)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Relocating Battery to trunk	ML	Engine, Exhaust, Transmission	35	08-03-2015 01:58 PM
Shorai Lightweight Battery and KCMachine CNC Machined Battery Tray Package	KCMachine	Brakes, Suspension, Chassis	111	10-08-2014 09:26 AM
Fuel or Battery Kill Switch?	nabil_frs	CANADA	3	03-09-2014 09:43 PM
Battery in the trunk	scottman	Electronics \| Audio \| NAV \| Infotainment	14	10-06-2012 08:26 PM
Relocating battery to trunk	Ess Vee	Engine, Exhaust, Transmission	17	10-02-2012 05:32 PM

07-21-2014, 08:29 PM	#2
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	Why are you using a LiFePO battery?

07-21-2014, 09:34 PM	#7
quark Member Join Date: Jun 2014 Drives: BRZ Location: NA Posts: 23 Thanks: 2 Thanked 11 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Had this happen to me also. Swapped out the 5Watt light bulb (437mA) with a low power T10 LED (20mA). With the LED and dash indicator the current draw is ~80mA, this will allow the light to be on for about 2 weeks with enough power left in the stock battery to start the car.

07-21-2014, 11:24 PM	#10
litemup Banned Join Date: May 2014 Drives: around Location: r3dn3ck's butt Posts: 451 Thanks: 1,145 Thanked 620 Times in 357 Posts Mentioned: 14 Post(s) Tagged: 1 Thread(s)	Google is your friend. This one's on the autozone website. It's mine now. Get your own.

07-22-2014, 12:18 AM	#14
Lawnik Senior Member Join Date: Mar 2012 Drives: Flat grey Toyota 86 Location: Edmonton, AB Posts: 397 Thanks: 545 Thanked 155 Times in 86 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Yes But I just took the bulb out and crushed it With the Shorai charger it recovered quickly Lol

User Name		Remember Me?
Password