| Author |
Message |
Peter Broadribb (Madbrit) (67.136.84.54)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 5:27 am: | |
Has anyone done a comparison on efficiency, both cost and capacity wise between 8D deep cycle and regular golf cart type batteries.
I have space for either 2 8D 12 volters or 6 golfcart 6 volters. What is going to put out the most and survive being drained the best? Also thinking of using one of those small house fridges on the inverter too. Thanks.
Peter. |
FAST FRED (4.245.128.204)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 5:46 am: | |
The weight of lead will tell you which will have the best capacity and longest life.(when comparing the same brand)
Its the lead that is the "POWER " .
NONE will survive constant discharges over 50% and careless recharging.
How will you be monitoring and recharging the new set?
FAST FRED |
madbrit (67.136.84.54)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 6:07 am: | |
Monitoring with a Link 2000 and recharging with the engine alternator and a three stage internal charger in a Combi inverter. Possibly add a couple of solar panels as it seems a waste not to use the sun in Arizona.
Peter. |
BrianMCI96A3 (69.34.170.233)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 8:37 am: | |
Peter, there have been comparisons done.
There was a website I looked at the last time we had the battery debate...
I wish I could remember where the site was, but in essensce, they listed a huge range of batteries and their specifications.
In this survey, 6V golf cart batteries represented the biggest bang for the buck.
About the only problem I see with 6V batts is the need for more wiring connections between batteries.
But if you are careful making connections tight, seal the connections with something like battery grease, and monitor them, I see no reason 6V batteries wouldn't be more than servicable. |
FAST FRED (4.247.55.7)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 9:56 am: | |
One very large advantage to the 6v batts is the hight for tall Trojan L-16 or similar Surettes is avilable in a coach, saving bay floor space.
FAST FRED |
Henry Draper (146.129.147.120)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 10:50 am: | |
Peter,
Start you're search for information with this link: http://www.phrannie.org/battery.html.
Then go where ever else you need to for answers you don't find there.
This is the best single source I found for answers to the kind of questions you're asking.
Henry Draper
'64 Eagle
Edmonds, WA |
Tom Caffrey (Pvcces) (65.74.66.104)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 11:40 pm: | |
Peter, I think the golf cart batteries will give you the most bang for the buck when comparing them to 8D batteries. However, the house refer stands a good chance of using as much power as all other things combined. The Link will let you know.
You should have enough amp hour capacity so that neither your inverter nor your alternator can replace more than 20% of the capacity per hour when recharging. This is the C/5 rule.
Temperature controlled charging is a real help in temperature extremes of either kind. This should be easy with the inverter, but may be more difficult with the alternator. The Arizona sun can raise some particular hell with battery charging.
Good luck with your setup.
Tom Caffrey PD4106-2576
Suncatcher |
Marc Bourget (209.142.38.81)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 29, 2004 - 1:06 pm: | |
I too am familiar with the C/5 rate, but my "eddycation" was expanded by reading Dave Smead's series on 12Volts and a visit to the www.glacierbay.com site.
It discusses a C/4 rate for lead acid batts,
C/2.5 for Gel Cell Batts and a C/1 for AGM Batts,
Check both sources out!
Onward and Upward
Marc Bourget |
Doug Dickinson (Dougd470) (65.161.188.11)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, September 30, 2004 - 11:43 am: | |
The most important factor in most ANY battery system, and the life of the actual batteries, is the management of the battery string (ie charge/discharge rates, maintenance, etc). I suggest you concentrate on that first, then you can accurately (kinda) look at the life-cycle cost per amp, etc. Without the management system in place, you are just rolling the dice (and expensive ones at that).
The type/size/capacity is driven by the maintenance more than we care to give credit for. A battery bank drained to absolute zero is not going to take many cycles. A managed string could be anywhere from 300 to 1000 cycles at 40% or so (for the right kind of batteries).
IMHO
Doug
St Louis MC9 |