LeftieBiker
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Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 12:52 am

Joeynovak wrote:It may... The 56 is still a relatively narrow battery (6 1/8") whereas most of the batteries are approx 7". So a universal hold down may work. I ordered a few different hold downs to try out. I want to find the best fit. I also ordered some acid neutralizing absorbing mat since the tray isn't quite big enough.


I thought you wrote that it fit the tray fine. Never mind.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

pointlomadave
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Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 2:11 am

Me personally, I ditched the factory lead acid 12V battery and put in a 2lb Li-Ion batttery. I've run them in all my cars/motorcycles for the last 7 years. They're only $99 on Amazon too. I just used foam bricks to get the battery to the proper mounting height for the tie down. Oh, and not entirely necessary but most people will appreciate having post adapters as the battery is set up for motorcycle terminal connection. U can buy those on Amazon for around $12 - $15.

www.amazon.com/YTZ14S-Z14S-Lithium-Seal ... B00DCXIJJG

LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
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Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 4:08 am

Do your motorcycles run 10+ amps worth of accessories?
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Joeynovak
Posts: 7
Joined: Fri Dec 16, 2016 7:38 am
Delivery Date: 11 Dec 2016

Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 12:20 pm

I looked at going with a smaller battery, and decided not to. The capacity rating (in Ahr) of the li-ion motorcycle batteries is pretty low (3 to 4?). Leave the head lights on for 15-20 min and your stuck. (Assuming the headlights draw 20amps or so.). And just the headlights is a kind of a light load.

Not saying the li-ion motorcycle battery is a bad idea. It's just not for me.

JeffInCO
Posts: 8
Joined: Sat Oct 03, 2015 5:49 am
Delivery Date: 20 Oct 2014

Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 1:34 pm

I have a 2015 SV (took delivery in Oct 2014).

My original battery was mostly okay until about 2 weeks ago. I say "mostly" because I did have the issue where the upgraded 3G TCU would go quiet for weeks on end, although none of the other systems in the car were affected. As has been discussed in other threads, this could have been caused by marginal supply voltage at the TCU when the car is off. (I've successfully done the fuse-pull-reset of the TCU a few times.)

I took my Leaf into the local Nissan dealer for its 3-year checkup the last week of October 2017. As part of that checkup, they did a test on the 12V battery, which passed... but by the 1st week of November the 12V battery was completely kaput. I tried to charge it with an external 15A charger, and also with a battery tender. I could get the voltage up to about 13V after the charger was removed, but it would drop to <6V as soon as I put any load on it. My guess is that it was already on its last leg, and that the test performed by the dealer (which probably involved a high current load) was the straw that broke the camel's back.

Anyway, I decided to replace it with a Bosch AGM battery of the same size (51R) as the original battery. So far, so good... but only time will tell if the AGM lasts any longer (and maybe keeps the TCU happier) than a regular flooded lead acid battery.

Even though I decided against the Li-Ion option, I'd like to thank those that are willing to go out on a limb, then report their successes and failures back to the forum.

Jeff

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Nubo
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Location: Vallejo, CA

Re: Interest In A 12V Battery Upgrade Kit??

Thu Nov 16, 2017 2:31 pm

Joeynovak wrote:I looked at going with a smaller battery, and decided not to. The capacity rating (in Ahr) of the li-ion motorcycle batteries is pretty low (3 to 4?). Leave the head lights on for 15-20 min and your stuck. (Assuming the headlights draw 20amps or so.). And just the headlights is a kind of a light load.

Not saying the li-ion motorcycle battery is a bad idea. It's just not for me.


My thoughts as well. Most of the cheap Li 12V-replacement batteries have very low true Ahr capacity, if they even list it at all. They may be able to provide a short burst of starting current for a car, but the problem is modern cars draw current even when parked ("dark current"). LEAF even more so. After a few days of parking these low-capacity batteries will be fully drained. Imho in a Li replacement you need at least 20Ahr or so to be viable. And those don't seem to come cheap at all.
I noticed you're still working with polymers.

powersurge
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Location: Long Island, NY

Re: Interest In A 12V Battery Upgrade Kit??

Fri Nov 17, 2017 5:52 am

The answer to this age old question of Leaf 12v batteries has 2 solutions... First, you do not need a L-ion battery, or AGM deep cycle. The 12v electrical system does not require any cold cranking power (like starting a big engine), so the stock one is adequate. If you want an upgrade, get the biggest that fits in the battery tray, or even get a bigger tray, and you can have a good, powerful, Lead Acid battery that can last 10 years, like most of my car batteries do.

Second, it is not the size or type of battery that is important. Dead Battery problems do not happen suddenly, but over time, when we are not looking. My 3 year old battery is in NEW condition. I know this because I have installed a digital volt meter that tells me the battery voltage at all times when I drive. You can get one reasonable, and install it in the cigarette lighter, or hard wire it. When you see the battery voltage start going down, then you can investigate what your car is doing....
Last edited by powersurge on Mon Nov 20, 2017 10:20 am, edited 1 time in total.

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Nubo
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Re: Interest In A 12V Battery Upgrade Kit??

Fri Nov 17, 2017 8:48 am

powersurge wrote:The answer to this age old question of Leaf 12v batteries has 2 solutions... First, you do not need a L-ion battery, or AGM deep cycle. The 12v does not require any cold cranking power to start a big engine, so the stock one is adequate. If you want an upgrade, get the biggest that fits in the battery tray, or even get a bigger tray, and you can have a good, powerful, Lead Acid batter that can last 10 years, like my car batteries do.

Second, it is not the size or type of battery that is important. Battery problems so not happen suddenly, buy over time when we are not looking. My 3 year old battery is in NEW condition. I know this because I have installed a digital volt meter that tells me the battery voltage at all times when I drive. You can get one reasonable, and install it in the cigarette lighter, or hard wire it. When you see the battery voltage start going down, then you can investigate what your car is doing....


Sure, you can intervene and spend time charging the battery separately from the vehicle, or disconnect it before parking for more than a day or two... Examining its voltage constantly; doing load tests... But if you just want to be able to drive without playing nursemaid to a 12V battery, a deep-cycle is a useful alternative.
I noticed you're still working with polymers.

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Stanton
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Re: Interest In A 12V Battery Upgrade Kit??

Fri Nov 17, 2017 10:02 am

Nubo wrote:Sure, you can intervene and spend time charging the battery separately from the vehicle, or disconnect it before parking for more than a day or two... Examining its voltage constantly; doing load tests... But if you just want to be able to drive without playing nursemaid to a 12V battery, a deep-cycle is a useful alternative.


...or just replace it with a LiFePO4 battery and forget about it! If capacity is a concern, there are higher Ahr alternatives available (I use 20 AHr https://www.lithiumpros.com/product/lit ... n-battery/)...for more $.
Last edited by Stanton on Fri Nov 17, 2017 4:12 pm, edited 1 time in total.
2011 Blue Ocean SV w/floor mats & window tint
12v LiFePO4 battery & FIAMM 74100 horns
Wet Okole seat covers (front)
Tor's low-power heater mod
2013 sun visor
3G modem upgrade
L2 EVSE Upgrade
Battery Pack replaced (Rev E) @51 months and 41k miles

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Nubo
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Re: Interest In A 12V Battery Upgrade Kit??

Fri Nov 17, 2017 10:56 am

Stanton wrote:
Nubo wrote:Sure, you can intervene and spend time charging the battery separately from the vehicle, or disconnect it before parking for more than a day or two... Examining its voltage constantly; doing load tests... But if you just want to be able to drive without playing nursemaid to a 12V battery, a deep-cycle is a useful alternative.


...or just replace it with a LiFePO4 battery and forget about it! If capacity is a concern, there are higher Ahr alternatives available (I use 20 AHr)...for more $.


I'd consider 20AH to be a viable capacity in a Li replacement, but I'm not willing to spend $800 for it. At $300 I might bite. One does also have to be careful, there are a lot of fly-by-night characters in that market niche. I'd wait until it's not so much like the Wild West. Or, build a pack of my own. 40AH LiFePo cells can be had for about $60 each. I built 8 of them into a pack for my electric lawnmower and it kicks ass! :mrgreen:
I noticed you're still working with polymers.

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