| [GMCnet] House batteries [message #274977] |
Sat, 04 April 2015 10:44 |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
|
Senior Member |
|
|
Do an internet search and you will find two different yellow top Optima battery configurations. The lesser capacity batteries (around 50 or so amp hours) have the six round cells lined up in two even rows of three cells each while the larger capacity yellow top batteries (around 75 amp hours) have those two rows offset as the cells are larger. When it comes to house batteries, more capacity is always better so buy the most capacity you can afford and have room for. If you are intending any high amp draw applications (like inverters), interconnect the batteries with cables much larger than the 4 gage stuff normally sold off the rack at auto parts stores. Use at least 0 gage wire with quality terminals. Many auto supply stores will make up good quality cables to your specs while you wait.
Any good AGM will work the same as the Optima brand and AGMs come in different capacity/size/configuration up to around 220 amp hours (a size 8D) with either auto battery posts or marine style tabs for screw on connections. Most battery manufacturers rate capacities in hours at a constant 20 amps per hour discharge rate so a 50 amp hour battery can supply a total of 50 amps at a 20 amp per hour rate of discharge which means it would last 2.5 hours at that discharge rate.
A typical GMC Suburban furnace will draw around 9 amps while running so if your furnace ran half the time during a 8 hour night it would consume 36 amp hours that one night or around 60% of a 50 amp hour single small configuration Optima yellow top battery. Any corrosion at the connection points or too small a wire from the battery to the item being powered will reduce that apparent capacity still further.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jerry & Sharon Work
78 Royale
Kerby, OR
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
