Great video! I like the way you anticipate that some of us might have issues with the battery warning light post installation and give us the solution BEFORE we panic. Keep ‘‘em coming.
It might be a good idea to also upgrade the cables going from the alternator to the battery as well as possibly getting a high out put alternator, I know there is a 370 amp high out put on the market for tacomas
Yup. I have the same mod. I actually ordered my from HKB Electronics. I did not think to check ebay, it would have saved me some $. I decided to save weight on the front corner and went with the Group 24 AGM and the 2nd group 35 battery on the rear corner. I also did end up slightly re-enforcing that back corner so we will see how she holds up over time. I will also be interested to see how that front corner holds up to the weight of the AGM 27 in your rig, keep us posted. I have had mine running now for about a year and I can say its worked great and kept my AGM topped off (no more trickle charge maintenance). It was also a much cheaper alternative to use this rather than setting up a relay and isolator to route from my second battery back to the primary to charge from solar.
$1.25 fuse diode from mouser is all I needed to do. Swapped out the fuse in the AltS with the diode and it’s been perfect. Thread in Tacoma world has the part number and my posts under JMcFly covering exactly what I used
Thanks Stephen! I forgot to mention in the vid but this only works with the 2nd Gen Tacomas ... so if you have a 3rd Gen you'll need to get some kind of tune.
I've seen this for awhile, my battery in my truck was approaching 3 years old. Did not want to fool with it going bad on me. I decided to upgrade to a agm. I got the x2power also. I had to have my batteries plus order it for me. I got the 27f. Since of these being so expensive, they do not have these on hand 😂😂😂😂😂😂. Since you got the ebay voltage booster, I picked up one to. I almost went with a group 31. But they told me.that we can't warranty it since it's not the proper battery for this truck. And the 4 year warranty plus another $100 is what made me decide to be patient and wait for a 27f. I can't wait to get it in my truck with the booster. Agms are far superior over your standard flooded.
With the 3rd gens you can have a custom tune flashed to the ecu that will raise the output of the alternator for the AGMs. Stock is high 13 volts and now mine is putting out 14.6-7.
WOW! new battery, bigger, more Power, flashy good looks Plus a fancy new fuse holder-thingy. 😋 Man your livin' in tall cotton now. p.s. glad to see yer back👍
I put an AMG battery in my 2010 4Runner, because the interstates kept corroding up so bad, it was shorting the life of the battery, replaced w/the AMG battery and no problems, didn’t even do the booster, really didn’t know about
I think the problem with low charge would only come on slow over several months,maybe can be prevented with a short use of a trickle charger once a month or so (but trickle charger must be able to get it up to about 14.7 or 14.8(?)volts for at least a half hour or so? (But no higher or overcharging/loss of gassing might occur and shorten battery life)
As an electrical engineer, increasing voltage even 0.4V will increase the aging rate of electronics. Probably ok but youre asking for problems you don’t know what’s connected to that voltage and what it’s ratings are
Well saw youre saying it won’t work in 3rd gens because they regulate voltages. Yes this makes sense you’d possibly be out of the input voltage range or reduce efficiency at best. Still increases aging of all electronics. If you do this better find the wiring diagrams and all the part datasheets to check compliance
Great video! If I remember correctly, they do not make one for a 3rd Gen. I was having the same problem with the AGM in my 2017, I hook up a charger once a month to keep it topped off.
I doubt one is coming for 3rd Gen since we’re six years in so far. But I also do exactly that, just put it on the charger once a month and before Overland trips. I have no problems.
@@robirwin9514 What are you experiencing if you do not top off the battery? I am running an AGM battery and came across this video but I am concerned because I may not be getting the proper charging cycle. Now I am wondering what are the affects of not having the proper setup or charging output for the battery.
@@theyotaduo Sorry, I can’t answer from my experience since I do top it off. I have a buddy that says he never pays any attention to his and doesn’t have any trouble.
The stock voltage was 14.25 at idle, but what was the voltage at rpm over 1k? Maybe it’s 14.8 at just over idle rpm. An alternator doesn’t charge any style battery well at idle.
i sure am doing this for my battery. and it may help with my aftermarket sunroof and alarm/remote start. was thinking where did brian go? thought something may happen to you
Interesting, never heard of a Alternator Booster. I tried to buy a battery from battery plus last summer and there replacement was to tall for the stock battery hold down also?! Even tho the computer said it was a replacement. I ended up going across the street to advanced auto parts and there Die Hard replacement fit with no modifications.
@@Vhrodriguez91 i had the same issue here in Canada returned my battery from parts source went to my local toyota dealer and bought a toyota battery was talking to parts guy about battery bieng about 3/8 inch too tall and he went into warehouse and brought out a kit that they sell ( not a toyota factory kit but my dealer here in Saskatoon had it worked great ) maybe check with your dealer
im like super close to buying a dual battery setup my youre saying that the battery can handle the job.. could it run camp for at least 72hours with a 75qt electric fridge
I’m confused. TW states 3rd gens require a tune and not this fuse mod. Isn’t your truck a 3rd gen? If so, how is your mod performing. I followed you TW link and find this note. In some newer vehicles like the 2016+ Tacomas, the voltage is regulated by the ECU, meaning no voltage regulator Alt-S circuit to spoof.
@@lenweber7142 The guy on TW stopped making them but you could get lucky and find someone selling their used one on the thread here: www.tacomaworld.com/threads/everything-molle-bs.410254/
Help…did this mod but not charging…same battery brought yesterday…staying around 13.6 to 14.3… the positive Battery terminal had some corrosion on it…clean it off but still low voltage…
@@jrod4491 It seems like the alt booster mod is working then but that there's an issue with your battery. Might want to have one of the auto places check it for you.
Question? so the agm battery that I got optimal charging is 14.4-14.8 so I did a an alternator boost which puts the voltage in that area so the battery will charge. But when I first started my truck when it was cold out it was reading 14.88 -14.9 but then dropped after about 5 mins when the truck warmed up then stayed around 14.6-14.7. (I live in Canada where I’m starting the truck at -20) My question is when my truck starts up and is at 14.9 ish is that bad for the battery will it overcharge the battery even tho it’s only like that for about 5-10 mins?
Most vehicles have some temperature compensation for the alternator regulated float voltage. Also some like the Jeep Grand Cherokee have a temperature sensor in the battery tray that touches the underside of the battery (but voltage/regulation is probably optimized for a regular sloshing battery,not for an AGM )
Be sure to checkout the wicked winter offroading vid I made recently: ruclips.net/video/QJ3IV2VqVq4/видео.html
Great video! I like the way you anticipate that some of us might have issues with the battery warning light post installation and give us the solution BEFORE we panic. Keep ‘‘em coming.
Agreed!
OTT tune can reprogram alternators for AGM battery
It might be a good idea to also upgrade the cables going from the alternator to the battery as well as possibly getting a high out put alternator, I know there is a 370 amp high out put on the market for tacomas
Great idea! Did it on my 4Runner.
Yup. I have the same mod. I actually ordered my from HKB Electronics. I did not think to check ebay, it would have saved me some $. I decided to save weight on the front corner and went with the Group 24 AGM and the 2nd group 35 battery on the rear corner. I also did end up slightly re-enforcing that back corner so we will see how she holds up over time. I will also be interested to see how that front corner holds up to the weight of the AGM 27 in your rig, keep us posted. I have had mine running now for about a year and I can say its worked great and kept my AGM topped off (no more trickle charge maintenance). It was also a much cheaper alternative to use this rather than setting up a relay and isolator to route from my second battery back to the primary to charge from solar.
I looked into HKB too but they are pricey and seem to be out of stock for most of their stuff right now.
$1.25 fuse diode from mouser is all I needed to do. Swapped out the fuse in the AltS with the diode and it’s been perfect. Thread in Tacoma world has the part number and my posts under JMcFly covering exactly what I used
April 2024; 40.00 from eBay w/fuse intact
anyone seeing this, be weary. foregoing a fuse puts this at risk if there's ever any over current.
Just boosting the algorithm!
Lol thank you!
Great to see you back! I got the same battery about 2 months ago. I didn't know this about the battery so I'll be adding this mod ASAP.
Thanks Stephen! I forgot to mention in the vid but this only works with the 2nd Gen Tacomas ... so if you have a 3rd Gen you'll need to get some kind of tune.
@@Tacomaholic VF Tune is in my future then
@@G.O.2020 I think KD Max also works for this.
@@Tacomaholicdo you know if this mod will work with a 1st gen, 1998 ?
Thank you in advance
I've seen this for awhile, my battery in my truck was approaching 3 years old. Did not want to fool with it going bad on me. I decided to upgrade to a agm. I got the x2power also. I had to have my batteries plus order it for me. I got the 27f. Since of these being so expensive, they do not have these on hand 😂😂😂😂😂😂. Since you got the ebay voltage booster, I picked up one to. I almost went with a group 31. But they told me.that we can't warranty it since it's not the proper battery for this truck. And the 4 year warranty plus another $100 is what made me decide to be patient and wait for a 27f. I can't wait to get it in my truck with the booster. Agms are far superior over your standard flooded.
Now that's a great mod worth upgrading 👍
Absolutely! Lol I actually found out about it a few days after installing my new battery.
@@Tacomaholic Would that same battery and booster work on my 3rd Gen also or do I need a different setup?
@@mmunoz5875 According to that thread on TW the 3rd gen's ECU regulates the voltage so this wouldn't work.
With the 3rd gens you can have a custom tune flashed to the ecu that will raise the output of the alternator for the AGMs. Stock is high 13 volts and now mine is putting out 14.6-7.
Damn Bri-Guy, you been liftin? Lookin jacked!
Kept waiting for you to start pulling out those mini coffee creamers and throw them at camera.
ruclips.net/video/8C4lK41SX-Q/видео.html
Well, it’s aboot time. Looking forward to the battery attachments.
WOW! new battery, bigger, more Power, flashy good looks Plus a fancy new fuse holder-thingy. 😋 Man your livin' in tall cotton now. p.s. glad to see yer back👍
I put an AMG battery in my 2010 4Runner, because the interstates kept corroding up so bad, it was shorting the life of the battery, replaced w/the AMG battery and no problems, didn’t even do the booster, really didn’t know about
Damn straight out the Mercedes 😂
I think the problem with low charge would only come on slow over several months,maybe can be prevented with a short use of a trickle charger once a month or so (but trickle charger must be able to get it up to about 14.7 or 14.8(?)volts for at least a half hour or so? (But no higher or overcharging/loss of gassing might occur and shorten battery life)
As an electrical engineer, increasing voltage even 0.4V will increase the aging rate of electronics. Probably ok but youre asking for problems you don’t know what’s connected to that voltage and what it’s ratings are
Well saw youre saying it won’t work in 3rd gens because they regulate voltages. Yes this makes sense you’d possibly be out of the input voltage range or reduce efficiency at best. Still increases aging of all electronics. If you do this better find the wiring diagrams and all the part datasheets to check compliance
Great video! If I remember correctly, they do not make one for a 3rd Gen. I was having the same problem with the AGM in my 2017, I hook up a charger once a month to keep it topped off.
Thanks Scott! Hopefully something will be available soon for 3rd gens.
I doubt one is coming for 3rd Gen since we’re six years in so far. But I also do exactly that, just put it on the charger once a month and before Overland trips. I have no problems.
@@robirwin9514 What are you experiencing if you do not top off the battery? I am running an AGM battery and came across this video but I am concerned because I may not be getting the proper charging cycle.
Now I am wondering what are the affects of not having the proper setup or charging output for the battery.
@@theyotaduo Sorry, I can’t answer from my experience since I do top it off. I have a buddy that says he never pays any attention to his and doesn’t have any trouble.
@@robirwin9514 Your buddy is making his AGM battery commit slow suicide.
The stock voltage was 14.25 at idle, but what was the voltage at rpm over 1k?
Maybe it’s 14.8 at just over idle rpm. An alternator doesn’t charge any style battery well at idle.
Man I jibber jabber too much, but I am looking forward to how you do the new battery attachments. They are on my list too.
Support RUMBLE!
So 2 yrs later how is the booster any issues with the taco???
Still no issues
Is it necessary if you have a 27F battery or AGM? What if I just wanna do it because I have extra accessories on my truck?
i sure am doing this for my battery. and it may help with my aftermarket sunroof and alarm/remote start. was thinking where did brian go? thought something may happen to you
Question though, will that work for a 24f as well
The factory Tacoma battery is a 24f should the alt booster mod shouldn't be needed unless you jump up to a larger battery.
Thank you !!!
Is this what I need to do to have charge while my engine is off?
Will this work for a toyota corolla with an upgraded battery?
Interesting, never heard of a Alternator Booster. I tried to buy a battery from battery plus last summer and there replacement was to tall for the stock battery hold down also?! Even tho the computer said it was a replacement. I ended up going across the street to advanced auto parts and there Die Hard replacement fit with no modifications.
Yeah the factory battery tie down needs to be replace (with new j hooks) depending on what battery group you swap to.
@@Tacomaholic where can you get longer j hooks
@@Vhrodriguez91 i had the same issue here in Canada returned my battery from parts source went to my local toyota dealer and bought a toyota battery was talking to parts guy about battery bieng about 3/8 inch too tall and he went into warehouse and brought out a kit that they sell ( not a toyota factory kit but my dealer here in Saskatoon had it worked great ) maybe check with your dealer
im like super close to buying a dual battery setup my youre saying that the battery can handle the job.. could it run camp for at least 72hours with a 75qt electric fridge
I’m confused. TW states 3rd gens require a tune and not this fuse mod. Isn’t your truck a 3rd gen? If so, how is your mod performing. I followed you TW link and find this note.
In some newer vehicles like the 2016+ Tacomas, the voltage is regulated by the ECU, meaning no voltage regulator Alt-S circuit to spoof.
No my truck is a 2014 2nd gen.
Is the X2 27F a taller battery that requires the SDHQ battery hold down kit? Also did you change out the battery tray.
No the factory battery tray holds the X2 27F ... barely.
@@Tacomaholic will the stock j hooks work for the x2?
@@Puttj No, neither with the stock battery tie down. I'm using the SDHQ tie down with these jhooks: amzn.to/3AY7Txd
can i use that voltage booster on a fist gen. tundra?
If you need to increase the voltage to charge the battery, then will my solar panel have a problem charging that X2 group 27 battery? Cheers.
Not sure on that one. Hopefully someone with more electrical knowledge will chime in.
Good info 👍🏼
Ive heard that batteries plus gives trouble with X2 battery warranties if the battery is not completely dead. Have you heard this?
A friend of mine went through them to get his X2 replaced and didn't have any issues.
I was doing some research on this was wondering if the amperage is different if it on a trd sport with a tow package?
I'm not sure but my TRD Offroad has the tow package and it was still too low to properly charge the bigger 27F battery.
Way of topic!! But I'm being challenged to find a rear seat delete molle rack for my 2014 extra cab, can ya help! Thanks Len
Are you looking for the one that covers the entire back wall?
@@Tacomaholic yes
@@lenweber7142 The guy on TW stopped making them but you could get lucky and find someone selling their used one on the thread here: www.tacomaworld.com/threads/everything-molle-bs.410254/
who makes your bumper?
Help…did this mod but not charging…same battery brought yesterday…staying around 13.6 to 14.3… the positive Battery terminal had some corrosion on it…clean it off but still low voltage…
What was the battery voltage range with the engine running before installing the mod?
@@Tacomaholic 13.2 to 13.5…sorry for the late response I’m working…..California
@@jrod4491 It seems like the alt booster mod is working then but that there's an issue with your battery. Might want to have one of the auto places check it for you.
What would be ur next best recommendation besides an AGM?
I haven't really looked at anything outside of AGMs.
@@Tacomaholic I was looking at the Duracell Ultra Gold 27M. It has 840 CCA. Just not sure if it'll fit with the stock mounting plate and J hooks.
@@craigpattison5762 You should be able to get the measurements and compare with the mounting plate, and you can always grab longer J-hooks.
Will this battery work on my 2016 4Runner with having to get the booster?
I'm not sure about the 4Runners.
Question? so the agm battery that I got optimal charging is 14.4-14.8 so I did a an alternator boost which puts the voltage in that area so the battery will charge. But when I first started my truck when it was cold out it was reading 14.88 -14.9 but then dropped after about 5 mins when the truck warmed up then stayed around 14.6-14.7. (I live in Canada where I’m starting the truck at -20)
My question is when my truck starts up and is at 14.9 ish is that bad for the battery will it overcharge the battery even tho it’s only like that for about 5-10 mins?
Best to reach out to the battery company for a detailed answer, but I wouldn't think it would harm anything if it's just for a few minutes.
Most vehicles have some temperature compensation for the alternator regulated float voltage. Also some like the Jeep Grand Cherokee have a temperature sensor in the battery tray that touches the underside of the battery (but voltage/regulation is probably optimized for a regular sloshing battery,not for an AGM )
Were your lights noticeably brighter after you put the diode in?
I can check tonight.
@@Tacomaholic how’d it go? Any difference?
The lifetime of the light bulbs in the vehicle might not be as long,especially the fancy "extravision" or "silverstar" headlight bulbs if used
The link is broken...
Here are the key words that bring it up on ebay: Low Profile Mini-Fuse Alternator Voltage Booster - Toyota Tacoma/4Runner/Tundra
So what's the purpose of this upgrade, what does it do for the tacoma? If it's just a better longer lasting battery that's cool to.
This is only needed if you are upgrading to a larger 27F battery so the battery is properly charged.
@@Tacomaholic Oh sorry I didn't make that clear, I was talking about the upgraded battery. Not the booster.
Mr satan