Opinions are like a$$holes, everyone’s' got one, right? Budget LiFePO4 (not diy li-on cell banks, buss bars and regulators) Opinions?

[Doxquzme Premium Member]

A lot of discussion on electrical/voltage draw and remedy.
Let's say for the sake of this discussion, stock Alt. Big three upgrade done, wanna reinforce quick discharge for occasional BASS amp draw/performance.
Not long duration sustain or at the picnic sound reinforcement when the car is off/parked, just want to help the system performance when listening without the lights dimming or the amp going into protect mode.

This is not my situation or anyone else in particular, just in general.

L/A or AGM under the hood, isolator inline, parallel ground in place 2/0 OFC.

1500 to 2000 watt system.

Assuming the need for a 2nd battery to fulfill this goal has been established.

What is your go-to BUDGET under $300 LiFePO4 drop-in solution?

Click to read more...

 

[metalheadjoe 10+ year member]

I would add a capacitor for 1.5k-2.0kw. You can't do much electrically with $300.

 

[Popwarhomie 5,000+ posts]

What is your go-to BUDGET under $300 LiFePO4 drop-in solution?

There isn't one. You can build one for $300. But drop in. None.

 

[Doxquzme Premium Member]

I would add a capacitor for 1.5k-2.0kw. You can't do much electrically with $300.

Agreed, DIY only.

 

[Doxquzme Premium Member]

There isn't one. You can build one for $300. But drop in. None.

Agreed, DIY only.

 

[1aespinoza 10+ year member]

What is your go-to BUDGET under $300 LiFePO4 drop-in solution

Not a LiFePO4, but Pops mentioned a Maxwell graphene supercap a few weeks ago. The YT video made it sound very convincing. TBH, I am not stoked with my Ioxus supercap so I have been eyeballing this product.

 

[Doxquzme Premium Member]

There isn't one. You can build one for $300. But drop in. None.

Question... it may have been you who mentioned why this is not a good option but I can't remember when. Thoughts anyone?

LiTime 12V 100Ah LiFePO4 Lithium Battery, Built-in 100A BMS, 1280Wh En

LiTime 12V 100Ah LiFePO4 Lithium Battery is perfect for RV, Solar, Marine & Home Energy Backup. Maintenance-free, 4000+ Deep Cycles. Perfectly replace AGM group 31.

www.litime.com

 

[dragon.breath 10+ year member]

Question... it may have been you who mentioned why this is not a good option but I can't remember when. Thoughts anyone?

LiTime 12V 100Ah LiFePO4 Lithium Battery, Built-in 100A BMS, 1280Wh En

LiTime 12V 100Ah LiFePO4 Lithium Battery is perfect for RV, Solar, Marine & Home Energy Backup. Maintenance-free, 4000+ Deep Cycles. Perfectly replace AGM group 31.

www.litime.com

The battery that you linked to is not made for high current discharge. They are made for steady charging and discharging like for a camper. If you look at the FAQ section of the link, you will see that they don’t recommend using these batteries for starting a car. If it can’t take the amperage of a starter, it can’t handle the peaks of car audio either.

 

[Popwarhomie 5,000+ posts]

Question... it may have been you who mentioned why this is not a good option but I can't remember when. Thoughts anyone?

LiTime 12V 100Ah LiFePO4 Lithium Battery, Built-in 100A BMS, 1280Wh En

LiTime 12V 100Ah LiFePO4 Lithium Battery is perfect for RV, Solar, Marine & Home Energy Backup. Maintenance-free, 4000+ Deep Cycles. Perfectly replace AGM group 31.

www.litime.com

Very low charge and discharge rate. No where near enough to be used in a car.

 

[Doxquzme Premium Member]

Very low charge and discharge rate. No where near enough to be used in a car.

That's right, that's what I recall too. What kind of specs would one be looking for regarding in/out discharge ratings?

 

[Popwarhomie 5,000+ posts]

That's right, that's what I recall too. What kind of specs would one be looking for regarding in/out discharge ratings?

99% if not 100% of the cased lithium batteries you find online will not work for car audio. They are all solar batteries with low charging and discharging rates. The only one I can recommend is the Glowe Voltage.

 

[winkychevelle 10+ year member]

Lol echos of what was said on diyma

 

[HardofWhoring]

A lot of discussion on electrical/voltage draw and remedy.
Let's say for the sake of this discussion, stock Alt. Big three upgrade done, wanna reinforce quick discharge for occasional BASS amp draw/performance.
Not long duration sustain or at the picnic sound reinforcement when the car is off/parked, just want to help the system performance when listening without the lights dimming or the amp going into protect mode.

This is not my situation or anyone else in particular, just in general.

L/A or AGM under the hood, isolator inline, parallel ground in place 2/0 OFC.

1500 to 2000 watt system.

Assuming the need for a 2nd battery to fulfill this goal has been established.

What is your go-to BUDGET under $300 LiFePO4 drop-in solution?

Your scenario is bad.

* 2/0 ofc, why?

* A battery isolator would give you a second battery, not dual batteries, so it would help this in no possible way.

* If it's about a quick little hit when the vehicle is running and a 2000 watt system, that's 173 amps. If most vehicles are 110-150amp alts stock, that's only when it's electrical is being maxed out. Generally you use less than half of that unless it's really hot out.
A 250 amp alt is going is to satisfy that. An alt recharges/produces even for that burst, would also satisfy this, and be much more useful overall.

 

[Doxquzme Premium Member]

99% if not 100% of the cased lithium batteries you find online will not work for car audio. They are all solar batteries with low charging and discharging rates. The only one I can recommend is the Glowe Voltage.

Always learning, good info to have. There are a TON of these out there, temping for many I'm sure.

 

[Doxquzme Premium Member]

Your scenario is bad.

* 2/0 ofc, why?

* A battery isolator would give you a second battery, not dual batteries, so it would help this in no possible way.

* If it's about a quick little hit when the vehicle is running and a 2000 watt system, that's 173 amps. If most vehicles are 110-150amp alts stock, that's only when it's electrical is being maxed out. Generally you use less than half of that unless it's really hot out.
A 250 amp alt is going is to satisfy that. An alt recharges/produces even for that burst, would also satisfy this, and be much more useful overall.

2/0 because it was the same as the other 1/0 I was looking at purchasing (and only for reference since that is what I used) AND to decrease the current loss on the ground return as I am parallel grounding (2/0 back to battery/engine/chassis/motor) 1/0 to the rear frame.

Isolators are necessary when mixing chemistry types i.e., L/a, AGM under the hood, and li-on in the rear so yes, applicable and required in my opinion. The post did say "Assuming the need for a 2nd battery to fulfill this goal has been established"