Working on the art of “going off the grid”, I teach you what is an AGM batter, all the battery types possible, batter sizes, such as group sizes, and MUCH MORE!
This is part of a series that should include.
Lower Power Consumption or Energy Use of your home
Consider which alternative power option works for you
What you need to know about batteries and battery banks
Everything you need to know about inverters
Many other items that we need to create a great battery bank
But what about Generators?
News Segment by J.Bradbury of PreparePDX.com:
A Child Falls from a Building and Dies
A New Barter Site
Signs of Change, by Hawkkeydavis
I was trying to decide how I would present this information to all of you, and I realized that Steven Harris of Solar1234.com and of Battery1234.com did a terrific job on the audio presented on his websites, so I decided to use his information (and hopefully he doesn’t mind) on most of this topic, with some more detail added by me to unnecessarily expound on the wonderful information that he has provided. If you decide to purchase ANYTHING that I have discussed today, please go to Steven’s websites and purchase from him through HIS affiliate links, to thank him for all of his hard work.
We can’t use “special batteries”, we have to use what works today.
400lb Telcom Batteries (2v)
Normal vs. Maint Free…caps
65% Sulfuric Acid, 35% Water
Lead (-) and Lead Dioxide (+) Plates
12v battery is 6 little 2v batteries, and a 6v is 3 chambers
These are spillable!
car jump box
emergency exit lights
Electrolyte is a Gel
Work in any position or configuration
Batteries are old before you get them
Size is smaller than FLA
2.5-3x price of FLA
Being replaced by AGM
Liquid Batteries, but “non-spillable”
Don’t confuse with Gel Cell
The Electrolyte is absorbed by the AGM material on the plates, like a sponge
Legal on Jet Liners and safe for children
Designed for fighter jets
Can take tons of abuse and be used in any configuration
Great for people with children
These can be freighted without hazmat DOT plackard
Chemistry is better than FLA
more efficient battery
deep cycle by nature
efficiency not worth price hike. Get for safety only.
LiPo (Lithium Polymer)
FeLiO4P (Lithium Phospate)
FLA is half price of AGM or Gel Cell
Children and Pets
I use FLA, Golf Cart Batteries
Battery Sizing and Jargon
Group Sizes generally available
24, 27, 29, and 31
Small car battery
Mid-sized car or truck
Get 31 if you can, but 29 if you have to settle
Meant to be used from full charge to full discharge
Not car batteries
Large Cold Cranking Amps (CCA) in Car Batteries
Larger Plate construction in Deep Cycle
12 times full discharge vs 200
Many times AGM and Gel Cell are deep cycle
Duracell, GC2 Golf Cart Batteries
Still Cheaper than FLA/ GC
6 volt batteries
120 AH (which is good)
6v, need 2 in series
8v, no configuration where this is useful to you
12 v battery
1v will push 1a through 1ohm resistance
Real battery capacity is rated in AH
200AH=10A for 20Hr, 20A for 10Hr, or 40A for 5H
Slower draw is more efficient
How long it will last based on assumed current draw
Marine battery for trolling motor with RC of 210min
Golf Cart battery with RC of 120 min
which is better???
Marine: 210min, 25A… GC Batt: 120min, 75A
210min/60 x 25A = 87.5AH
120min/60 x 75A = 150AH
Golf cart battery has more capacity
% of battery used
30% DOD = 70% left over
any DOD above 50% is call deep cycling… familiar?
Car Battery: 100% DOD about 15 times
Deep Cycle: 100% DOD about 150-200 times
50% DOD about 3-400 times
25% DOD about 9-1200 times
choose economy vs safety
64 lb each, need 2, so 130 lbs
more capacity, slightly better chemistry, thick plates
more room at top and bottom. for overfill, and the plate scale to fall
Caps easy to remove to add water
Better for stationary use, such as home bank, or permanent mobile bank.
50-60 lbs, easy to move, has a handle
Other: must pop caps with screwdriver
Better for mobility, something to be toted.
don’t worry about buildup in a room, it build up inside the sealed battery
Speed H2 escapes at is: 2000 m/s
problem is maintenance and opening battery or connecting charger
never connect or disconnect charger while on
never open battery with charger on
AGM has platinum catalyst to recombine H2 and O2
As I write tips for your adventures and hear about cool gear, I will let you know all about it!