Battery Tutorial and Discussion

[KF5LJW]

T105re batteries have been reviewed extensively and the results were use the standard t105, the price difference is not made up by enough longer life.

Well myself, prices, and cycle life do not agree with you. T-105 price runs around $135/unit, and T-105RE run $150/unit. That is a price difference of 9%. The T-105RE has a cycle life @ 20% DOD of 4000 cycles, and the T-105 @ 3000 cycles or a 33% difference.

[W0AAT]

I will be running 24 volt as soon as my new inverter arrives but running parallel is common in the solar energy market. Only way to get enough capacity. Batteries I am running http://www.usbattery.com/usb_us2200xc_golf.html flyer telling about the construction and THICKER plates http://www.usbattery.com/usb_images/..._fly_2a_08.pdf golf cart batteries are not a hybrid starter/deep cycle.

[KF5LJW]

I will be running 24 volt as soon as my new inverter arrives but running parallel is common in the solar energy market. Only way to get enough capacity.

Not true at all. I have installed many of 48 volt 4000 AH batteries with only 1-string by using 24-2-volt 4000 AH cells. With 6-volt batteries AH capacity ranges from 200 AH on the low end up to 820 AH on the high end. You just have to find the AH vs number of cells so you only make 1 single string. Renewable energy batteries range in voltage from 2 volt single cell batteries up to 24 volt 12 cell low capacity.

[W0AAT]

Cells that size are A: Not common B: Very expensive. The golf cart, L16 etc can be found locally (especially the golf cart) at a reasonable price. I paid $100 each for the 2200XC's from US battery, a single L16 is $300+ and from there the prices head for I can't afford it. Locally available is a lot more attractive during a failure as far as warranty and speed of replacement. It also negates very expensive shipping on lead acid batteries.

[K7ELP]

First let me apologize to those readers who I may offended. I did not mean to be argumentative. My first response was not as I wished it to be. I sometimes have trouble saying in the written word what I mean to say. To make matters more difficult for me sometimes doing a quoted post doesn’t appear the way I mean it. This is an operator error that I recognize.
I have had good luck with SLA batteries using them as intended as long as they did not get overcharged or over discharged. I agree that the AGM is a much needed replacement for them.
I am aware of the differences between the low power stored energy and the high power stored energy. I have some Trojan T-105 batteries that are charged by solar panels and they have been in use for 8 years. The energy is used to run my ham gear and run some lighting at night.

To John(KD0CAC). It sure would be nice if you would address me by my full call sign or my first name.

A question for Dereck (KF5LJW). Do you have a source for 2V high capacity flooded cells? I am planning a larger system and I totally agree with you that connecting batteries in parallel can and will shorten the life of the system.
73,
Ned

[KF5LJW]

A question for Dereck (KF5LJW). Do you have a source for 2V high capacity flooded cells? I am planning a larger system and I totally agree with you that connecting batteries in parallel can and will shorten the life

No problem Ned there are two heavy weights in the RE deep cycle business. You will pay up to 15-cents watt hour but you get a 10 year warranty.

First up is the kind of all Rolls Battery 4000 and 5000 series. 2 volt capacity ranges 1050 to 2430 AH. The 4000 series carries a 7 year warranty at 4000 cycle @ 20% DOD, and the 5000 carries a 10 year warranty at 5000 cycles @ 20% DOD.

The other one is Crown Battery 2CRP series with capacity ranging from 710 AH up to 3690 AH.

If that is too much capacity drop down to a 4 or 6 volt packages. 6 volts range from 200 AH up to 700 AH.

[KD0CAC]

Ned , you do not seem to be aware that using the last 3 digits of a call is just short-hand .
That short-hand is common practice on the ZED .
Any offense is only your perception , not any intend on my end .
73

[W0AAT]

Free shipping on Trojan 2 volt if you live close to a warehouse http://usabatterysales.com/pd-trojan...-lower-481.cfm

[K7ELP]

Ned , you do not seem to be aware that using the last 3 digits of a call is just short-hand .
That short-hand is common practice on the ZED .
Any offense is only your perception , not any intend on my end .
73

I did not know this thanks for bringing me up to speed.
73

[K7ELP]

No problem Ned there are two heavy weights in the RE deep cycle business. You will pay up to 15-cents watt hour but you get a 10 year warranty.

First up is the kind of all Rolls Battery 4000 and 5000 series. 2 volt capacity ranges 1050 to 2430 AH. The 4000 series carries a 7 year warranty at 4000 cycle @ 20% DOD, and the 5000 carries a 10 year warranty at 5000 cycles @ 20% DOD.

The other one is Crown Battery 2CRP series with capacity ranging from 710 AH up to 3690 AH.

If that is too much capacity drop down to a 4 or 6 volt packages. 6 volts range from 200 AH up to 700 AH.

Derek, thanks for the info on source of batteries. The other question that now comes to mind is charging the batteries. Do you recommend that the charger have temperature compenstation for change in temperature, and who do you recommend for charge controllers to be used with solar panels?
Ned.