lorenfb
Posts: 2509
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: Key Fob Battery Replacement = Dead Key

Sun Apr 25, 2021 3:19 pm

jjeff wrote:
Sun Apr 25, 2021 2:14 pm
lorenfb wrote:
Sun Apr 25, 2021 10:16 am
An alternate battery test for small "coin" type batteries, e.g. 2025 when using a multimeter, is to use the ammeter scale (highest setting 1st)
to do a basic load test. A good 2025 should provide about 100-200 milliamps.
Not sure I understand why you are saying, do you mean to short circuit the battery with an ammeter and shorted out it should show 100-200ma?
Correct.
jjeff wrote:
Sun Apr 25, 2021 2:14 pm
if so I guess I've never done that, I for sure wouldn't want to do it with a higher current battery but may be ok with something as tiny as a coin battery?
These smaller batteries have short circuit current capabilities, when new, of << 1.0A.
jjeff wrote:
Sun Apr 25, 2021 2:14 pm
Again if I understand you correctly, what should a 2032 battery be capable for ma? I'd assume more than a 2025 as it's larger.
So given the volume of these coin type batteries, one could determine the ratio of the short current, i.e. for the same type of electrolyte.
I had a 2032 battery which is probably 2-3 years old, and it only provided about 70ma. I didn't have one as new as my 2025 I tested.

I was having a similar key fob problem with my 2013 Leaf, where I replaced the 2025 battery from my older stock. The fob had the
same problem until I bought some new ones. When comparing my old stock 2025 to my new 2025s from Amazon, the old stock
only provided about 20-30% on the new 2025s, although the voltage was about the same.
Last edited by lorenfb on Sun Apr 25, 2021 3:25 pm, edited 1 time in total.
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

lorenfb
Posts: 2509
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: Key Fob Battery Replacement = Dead Key

Sun Apr 25, 2021 3:23 pm

LeftieBiker wrote:
Sun Apr 25, 2021 2:45 pm
You wouldn't be shorting the battery - you'd be placing a substantial load on it from the resistor in the ammeter.
Correct! Obviously one would never use that approach when testing a 18650 Li Ion with a typical VOM.
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

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Nubo
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Location: Vallejo, CA

Re: Key Fob Battery Replacement = Dead Key

Mon Apr 26, 2021 2:39 pm

lorenfb wrote:
Sun Apr 25, 2021 3:23 pm
LeftieBiker wrote:
Sun Apr 25, 2021 2:45 pm
You wouldn't be shorting the battery - you'd be placing a substantial load on it from the resistor in the ammeter.
Correct! Obviously one would never use that approach when testing a 18650 Li Ion with a typical VOM.
VOM ===> VOOM!
I noticed you're still working with polymers.

scottbrooks
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Joined: Sat Apr 24, 2021 12:33 pm
Delivery Date: 24 Nov 2016

Re: Key Fob Battery Replacement = Dead Key

Mon Apr 26, 2021 7:11 pm

I popped a 2032 in and it works great

LeftieBiker
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Re: Key Fob Battery Replacement = Dead Key

Mon Apr 26, 2021 7:21 pm

scottbrooks wrote:
Mon Apr 26, 2021 7:11 pm
I popped a 2032 in and it works great
Some people have no trouble with using a 2032, while others find it too thick.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jjeff
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Location: MSP MN

Re: Key Fob Battery Replacement = Dead Key

Tue Apr 27, 2021 5:31 am

LeftieBiker wrote:
Mon Apr 26, 2021 7:21 pm
scottbrooks wrote:
Mon Apr 26, 2021 7:11 pm
I popped a 2032 in and it works great
Some people have no trouble with using a 2032, while others find it too thick.
It can be quite tricky to get the cover back on when using a 2032, I've found putting on one side of the remote first works best and then the other......unfortunately I always forget what side so it's a 50/50 chance. If I can't get the second side to click in place I take it apart and put that side first and doing that I've always managed to get it back together even using the thicker 2032.
Do the newer gen Leafs still come with the poor value 2025 batteries or have they finally redesigned the remote to accept the same price but 50% more capacity 2032?
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

lorenfb
Posts: 2509
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: Key Fob Battery Replacement = Dead Key

Tue Apr 27, 2021 10:14 am

jjeff wrote:
Tue Apr 27, 2021 5:31 am

Do the newer gen Leafs still come with the poor value 2025 batteries or have they finally redesigned the remote to accept the same price but 50% more capacity 2032?
The original 2025 battery for my '13 Leaf lasted seven years. Why risk damaging the remote, e.g. the internal circuit board/components, by having to force the lid on with an oversize battery?
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

GerryAZ
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Location: Phoenix, AZ

Re: Key Fob Battery Replacement = Dead Key

Tue Apr 27, 2021 11:08 am

I found the 2025 replacement to be a snug fit in the remote for my 2019 so would not want to try to force a 2032 into it (same with previous cars), but I add a thin piece of stiff plastic under the panic button to eliminate inadvertent operation of the horn and lights. All 3 of my LEAF's used the same size 2025 battery and they last between 1 and 2 years for the daily use remote (much longer for the spare that stays outside communication range of the car).
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019

jjeff
Posts: 2379
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: Key Fob Battery Replacement = Dead Key

Tue Apr 27, 2021 5:31 pm

lorenfb wrote:
Tue Apr 27, 2021 10:14 am
jjeff wrote:
Tue Apr 27, 2021 5:31 am

Do the newer gen Leafs still come with the poor value 2025 batteries or have they finally redesigned the remote to accept the same price but 50% more capacity 2032?
The original 2025 battery for my '13 Leaf lasted seven years. Why risk damaging the remote, e.g. the internal circuit board/components, by having to force the lid on with an oversize battery?
Like others I found my 2025 battery lasting 1-2yrs, my 2032's tend to last 3-4yrs and personally, I feel prying the remote apart is the hardest part on the remote so if I can cut that by 50% or more I figure I'm better off.
Note I don't use a pliers or vice to get the remote back together, just a slow steady pressure with my fingers, if it doesn't click together I change the side I start with, and then it works, easy peasy :)
Not forcing anyone else to use a 2032 it's just I find them easier to find in a multi-pack(generally 4) fresh name-brand batteries from a trusted B&M store for ~$6. The less common 2025 I can only find in a 2 pack as as mentioned before they are ~50% less capacity for more money :idea:
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

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