1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Tacoma battery upgrade to Lithium?

Discussion in '3rd Gen. Tacomas (2016+)' started by Dronzoni90, Sep 21, 2021.

  1. Sep 21, 2021 at 10:08 PM
    #41
    Rainoffire

    Rainoffire Well-Known Member

    Joined:
    May 31, 2018
    Member:
    #255034
    Messages:
    2,808
    Gender:
    Male
    Vehicle:
    2017 QS DCLB TRD Sport
    OEM do put Lithium batteries in new cars. Hybrids, Plug-ins, EVs, etc.

    If you are talking about 12v versions, then a couple Euro performance car models have had them for years now. They can cost a fortune for an OEM replacement.
     
  2. Sep 22, 2021 at 7:46 AM
    #42
    zoo truck

    zoo truck Well-Known Member

    Joined:
    Apr 21, 2020
    Member:
    #325379
    Messages:
    5,034
    Gender:
    Male
    Vehicle:
    2020 quicksand sr5 tacoma
    None
    Lithium batteries need to be totally run down before they can be recharged they have memory, or you will destroy their ability to recharge fully eventually making them worthless. I doubt these trucks have that ability to know when. Lead acid batteries are different.
     
  3. Sep 22, 2021 at 7:53 AM
    #43
    zoo truck

    zoo truck Well-Known Member

    Joined:
    Apr 21, 2020
    Member:
    #325379
    Messages:
    5,034
    Gender:
    Male
    Vehicle:
    2020 quicksand sr5 tacoma
    None
    Forget this post...i was mixed up thinking of a niCAD battery.
     
    Chaosh1 likes this.
  4. Sep 22, 2021 at 8:18 AM
    #44
    scotkw

    scotkw Well-Known Member

    Joined:
    Mar 30, 2019
    Member:
    #288508
    Messages:
    458
    Gender:
    Male
    A free State
    Vehicle:
    '17 DCSB V6 2wd Sr5
    I built and put a lifepo4 under the back seat. When truck is off, it's in parallel with the starting battery so the capacity of both is used. When truck is on, the lifepo4 is isolated and charged separately via a boost converter set to 14.4 volts. So the lifepo4 gets constant volts and constant current. I also integrated a temp sensor so if temp is below freezing, it uses the charging current to heat the battery first. Once above freezing, it starts charging.

    I figure it will last longer than the truck.

    You don't need a 500$ battery and a 200$ charge controller. Just $50 in parts for boost converter and relays, then build your own battery pack of any size.

    Under hood volts,. Back seat volts.

    Screenshot_20210215-163954.jpg
     
  5. Sep 22, 2021 at 8:12 PM
    #45
    Cudgel

    Cudgel “Tonka”

    Joined:
    Mar 28, 2017
    Member:
    #214640
    Messages:
    4,188
    Gender:
    Male
    Live in: An Ocean of Plastic Trash
    Vehicle:
    2017 OR DCLB
    ICON8 Lift -285s. upTOPoverland rack.
    That is cool. I like the dual volt meter. I have one for each branch, but the rear one is well hard to see unless I’m in he back seat. Typically when I’m in the backseat it is somewhat electrified so I forget to look at the meter.
     
  6. Sep 23, 2021 at 6:08 AM
    #46
    Rock Lobster

    Rock Lobster knows nothing, yet an expert in everything.

    Joined:
    Dec 14, 2018
    Member:
    #275833
    Messages:
    6,660
    Gender:
    Male
    First Name:
    Ryan
    Dee Eff Dub
    Vehicle:
    Sport Crew represent

    LiFePO4 batteries are kinda weird on voltage. They dont have a linear voltage drop like lead acids do.

    On a lead acid (at rest, no active draw), you know that 13V is topped off, 11.5V is in the danger zone, and 12.3 is somewhere in between.

    From personal experience the topped off state (100%) of a Li-Iron is at 14.3 - 14.5 V, then they want to immediately drop to 13.5 or thereabouts and sit there for the vast majority of their discharge. Once you drop below 13.0-12.9 V you have maybe 10% battery left before it completely flats out at <11 volts. The huge horizontal line in their voltage curve makes it difficult to guess their state on just a voltmeter.

    Ud5FHEmFeoCKAvdUonvDFCSqXVPeqFKaDVvUl29t_f7075273e713d6f18ef4f3f86cee033306cb8fc7.jpg


    If you are putting a heavy cycle on lithium iron, I would recommend using a coulombmeter (amp-meter) to measure its state. Its slightly more accurate.


    This little knock-off monitor is cheap and as functional as the 200 dollar version. I run the rectangular shaped version in my camper - it very closely agrees with my multimeter.

    https://www.amazon.com/AiLi-Voltmeter-Ammeter-Voltage-Motorhome/dp/B07CTKYFTG?th=1
     
    not_nick and doublethebass like this.
  7. Sep 23, 2021 at 9:39 AM
    #47
    scotkw

    scotkw Well-Known Member

    Joined:
    Mar 30, 2019
    Member:
    #288508
    Messages:
    458
    Gender:
    Male
    A free State
    Vehicle:
    '17 DCSB V6 2wd Sr5

    Correct on all points and I have a similar amp meter already on other lifepo4 batteries I've built.

    One can sorta gauge the fullness of lifepo4 using those two volt numbers. Mine's set to charge at 14v, so bottom gauge will peak at 14v. Once near full, amps start to drop and the top volt number(vehicle volts) goes up, because of less load.. At which point lifepo4 is around 95% charged. If lifepo4 is 12v or less with no load, it's 95% dead. Most of lifepo4's energy is in the 3.0 to 3.5v range per cell.
     
    not_nick and Rock Lobster like this.
  8. Sep 23, 2021 at 2:48 PM
    #48
    not_nick

    not_nick Well-Known Member

    Joined:
    Sep 20, 2017
    Member:
    #230574
    Messages:
    1,443
    Gender:
    Male
    keeping jersey dirty
    That's really cool!! You should consider doing a thread on how you did it or making a kit to sell
     
  9. Sep 23, 2021 at 3:05 PM
    #49
    chuam

    chuam Well-Known Member

    Joined:
    Feb 2, 2021
    Member:
    #354841
    Messages:
    818
    Gender:
    Male
    First Name:
    Marcus
    San Diego
    Vehicle:
    2017 Tacoma SR5 DCSB 4x4
    Icon Stage 3 - 2.5 & UCAs front, Icon 2.0 rear Icon RTX Stage 2 leafs RSI Smartcap Evo Sport KDMax Pro tune ARB Recovery Point ARB Rear Locker 5.29 regear RCI Full Skids RCI Rock sliders R4T LCA Skids DRT Fabrication Hitch Skid Exhaust reroute ARB Dual Compressor w/ Slee Mount OR Black Fenders Caliraised Hidden Grill light bar Diode Dynamics SS3 Pro fog lights Rigid D-SS Pro Ditch lights A/C drain mod Differential Breather Mod Supralee Traction Board mount Liftd Gas cap holder Taco Garage DMM 2.0 Total Chaos bed stiffeners TRD SEMA Pro 17" wheels Falken Wildpeaks 275/70r17 TRD Pro Grill Ecological Bumper shells DesertDoesit Seat Jackers Waterport Day Tank - Rago Fab bed mount Yakima Double Haul OVS 270 Awning Wet Okole seat covers Overland Equipped/Blueseas Bracket/fusebox
    my 2015 BMW M3 has a li-ion battery as OEM.
     
  10. Sep 28, 2021 at 7:50 AM
    #50
    JDSmith

    JDSmith RTT’s are just grown-up forts

    Joined:
    Aug 28, 2018
    Member:
    #264364
    Messages:
    650
    Gender:
    Male
    First Name:
    Jesse
    Essex Jct, Vermont
    Vehicle:
    21 Pro MGM MT KDMax-Pro Tuned
    REALLY interested in how you did your setup!
     
  11. Sep 28, 2021 at 8:53 PM
    #51
    Urethra_Franklin

    Urethra_Franklin Active Member

    Joined:
    Nov 26, 2020
    Member:
    #347908
    Messages:
    33
    Goiter, CO
    Vehicle:
    2019 Tacoma TRD long bed double cab
    Campers, sliders, stuff
    A lithium fire can be extinguished with a class ABC fire extinguisher.
    https://firefighterinsider.com/the-best-fire-extinguisher-for-lithium-ion-batteries/
     
    Last edited: Sep 28, 2021
To Top