Solar batteries

I can guarantee that if you buy a Rolls Royce Phantom it will outperform any other make as far as warranty issues and carefree driving are concerned. Therefore it is a superior automobile and relegates all others obsolete. Why settle for less?

Lithium versus other chemistries.....

Mr wizard thanks that’s the kind of feedback I was looking for. Good info from everybody, thanks. And lithium, we’ll, Santa is going to have to work a little ot for that. Santa don’t like work.

campigloo wrote:
Oh bummer. I’m looking for maintenance free so it’s looking like that doesn’t exist. Should’ve known it’s too good to be true.
Thanks!

Lithium

My AGM maintenance routine was to blow the dust off every year.

I don't know why they're calling it a 'Solar battery'. It's just a battery. Some new buzz- word marketing ploy?

There is always some maintenance. AGM don't require a lot. I've not even looked at mine for 3 years. However, I tend to use them HARD.

I'd love to have firefly batteries, but I have champagne tastes and a beer budget.

my 154 pound 4d AGM is a good battery

it weighs more and is rated for a lesser amount of CCA only 1000

the Apex at 117 pounds weight with a higher CCA 1450 and Less $$

likely has very thin plates, which does not make a good use for deep cycle use
in an RV

i pair of 6v GC will weigh a few pounds more and have a higher ampHr rating

i like AGM batteries, i just think the Apex is not a good choice going by the listed specs

the AGMs in my previous RV were 102 pounds each and 135 ampHrs each

I had 5 of them, but (2) would weigh 204 pounds and be 270ampHrs
total

the more 'lead' per ampHr the better the battery, the longer the life
for heavy use

example Apex 117/200=0.58,
mine 154/200=0.77, my previous batteries 204/270=0.755,
approx 50% more lead per rated ampHr

Maintenance free? Checking wet batteries every two weeks isn’t a burden.

Apex sells batteries, it doesn’t make them. So who “makes” them?

“ApexBattery has been in business since July of 2004 offering factory direct prices on crucial everyday products such as:”

Interesting January 2016 review at https://forum.solar-electric.com/discussion/350303/battery-scam

Oh bummer. I’m looking for maintenance free so it’s looking like that doesn’t exist. Should’ve known it’s too good to be true.
Thanks!

how much does that 'apex' battery weigh

IIRC my 200amphr 8a4d AGM is 154 pounds, retail price is $460

i got it surplus for $200

found these specs

Weight 117.00

Amp Hour Capacity 200
Length 20.75"
Width 8.25"
Height 9.4"
Polarity |-||||||+|
Manufacturer Apex Battery
UPC 683405428596
Model Number APX12-200
Terminals L4 Blade
apex_sku APX12-200

CCA 1450

Chemistry Sealed Lead Acid AGM
Condition New
Volts 12

weight seems too light, and cranking amps too high

i have NO experience with this brand

No idea of quality, even for the more expensive options. That is a very good price for AGMs!

A note on AGM and solar. AGMs suffer under shallow cycling as with solar, so every so often you must draw them down to 50% SOC and hit them with a high amps (over 20% of AH) charge till full.

That means with a 200AH AGM you need a 40 amp or more charger that will stay at 14.4 or whatever till full, to haul out when you have shore power (not a gen , which can't be run that long).

Also "full" means leaving the charger on at 14.4 or whatever the battery spec says, till amps fall to under 0.5 amps per 100 AH of battery. So now you need an ammeter to tell you when that is. I use my Trimetric for that.

AGMS have their own difficulties besides their advantages!