Delivered: UPS 12v-9Ah AGM Batteries (eBay)

[MrNoBody]

original deal post
FedEx just delivered & it is four PowerStar 12v-9Ah AGM Batteries.
Fresh from Vietnam, mfd Oct. 2021. All @ 12.8-12.9v on the VOM.
UPS renewals are now this week's "project"! :thumbsup:

[mrbigstuff]

Wow. Great deal, i was skeptical and didn't pull the trigger. A little solar array back up in the works?

[gadje]

Price is $47 now

Also image shows Made in China. You say your was made in Vietnam?

[RAMd®d]

I waited too long and the deal had expired.

But I got tipped to a deal $10 more for a similar spec'ed battery from a different vendor and manufacturer.

The deal was good but batteries OOS.

But they'll ship in a week, so I'm in.

[Buzz]

What about going lithium iron phosphate ? ? ?

More power, supposedly longer life, half the weight, at least twice the price (or more), but if the life really is longer, and you get 11% more power, might it makes sense? Inquiring minds want to know. Asking for a friend.


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[mrbigstuff]

Buzz wrote:
What about going lithium iron phosphate ? ? ?

More power, supposedly longer life, half the weight, at least twice the price (or more), but if the life really is longer, and you get 11% more power, might it makes sense? Inquiring minds want to know. Asking for a friend.


==

I have no idea, and it's been far too long since high school Chem, but that sounds like "too good to be true" sort of marketing, eh?

[macphanatic]

MrNoBody wrote:
original deal post
FedEx just delivered & it is four PowerStar 12v-9Ah AGM Batteries.
Fresh from Vietnam, mfd Oct. 2021. All @ 12.8-12.9v on the VOM.
UPS renewals are now this week's "project"! :thumbsup:

But they were unloaded off the cargo ship just last week. miley-laughing001:

[Gareth]

Buzz wrote:
What about going lithium iron phosphate ? ? ?

It's my understanding that LIFEPO4 isn't a "drop-in" replacement for AGM/lead-acid batteries. They have different charging and battery management requirements.

[MrNoBody]

Gareth wrote:
[quote=Buzz]
What about going lithium iron phosphate ? ? ?

It's my understanding that LIFEPO4 isn't a "drop-in" replacement for AGM/lead-acid batteries. They have different charging and battery management requirements. .this

Just like flooded batteries, AGM, 'Gel'; each type requires a specific
protocol re care and charging.

gadje wrote:
You say your was made in Vietnam?

Yep, 'Fresh from Vietnam'.

[RAMd®d]

at least twice the price (or more),


This makes it a hard pass for me.

You didn't post a price on that battery, but I suspect two of them might cost more than twice the two I'm waiting on.

Li-Po batteries of any flavor require a BMS that balances the charge of the individual cells in order to extract maximum life.

The phases of a lead-acid battery charging cycle are different than those for a LiPo battery.

Some automatic chargers for lead-acid batterie have a desulfation stage that is bad for Li batteries, as are long float charge times that work well for lead-acid batteries.

A float charge is not to be confused with a trickle charge, which long term is not good for any battery.

Li batteries need to be 'warmed' up in really cold weather before they'll start a vehicle or operate at nominal output.

None of these represent a deal breaker for most people.

A lot of people have been putting Li batteries in motorcycles, and the results are mixed.

It seems to me there is a higher failure rated or shorter life for a lot of Li batteries, but I don't know why.

It may well be people don't fully understand the care and feeding of them, or that there are a lot of manufacturers that don't have great quality control.

I haven't seen any large number of reports of riders getting five years or more from Li batteries, but I see that a lot with lead-acid, specifically AGM batteries.

The weight savings of an Li battery can make a difference in handling depending on the vehicle it's in.

I stick with AGM because it's cheaper than Li, and I don't have to buy another charger.