I just got a used DEKA 8G4D GEL battery how do I test if its 183AH rate at c/20 as its spec suggests. do i plug a 9.15AH load for 20 hours or a 20 Ah load for 9.15 hours which one would be more accurate and for one test will the battery get damage if I recharge it right after the test
Announcement
Collapse
No announcement yet.
Testing a used Deka 8G4d - how to go about it?
Collapse
X
-
For testing a battery capacity, you only want to pull out about 25% of the charge, that is enough to tell if it's good, and not deep enough to hurt it.
Fully charge the battery
Let rest 4 hours, then Measure the voltage.
Use a light load, drain 25%-30% charge (calculated by amps & time)
Let rest 4 hours, then Measure the voltage.
Does the voltage match the curve according to the Mfg's voltage chart ?
Battery_Volt_Chart.jpgPowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister -
Originally posted by Mike90250 View PostFor testing a battery capacity, you only want to pull out about 25% of the charge, that is enough to tell if it's good, and not deep enough to hurt it.
Fully charge the battery
Let rest 4 hours, then Measure the voltage.
Use a light load, drain 25%-30% charge (calculated by amps & time)
Let rest 4 hours, then Measure the voltage.
Does the voltage match the curve according to the Mfg's voltage chart ?
[ATTACH=CONFIG]1832[/ATTACH]
quick question this is a 183 AH gel battery will this charger SC-1200A 2/8/12A 12V Automatic SpeedCharge Charger be good enough to charge it or will I damage it after reading most post 10% of AH capacity is recommended
http://www.batterychargers.com/Produ...me=94026806ACPComment
-
The charger needs to be a 3 stage charger, with settings for the "flavor" of battery you have, GEL, AGM, Flooded..
The sales sheet or manual says nothing about 3 stage charging, so while that charger might be good to top off the battery once in a while, I'd not leave it on charge for more than a dayPowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
-
Originally posted by Mike90250 View PostFor testing a battery capacity, you only want to pull out about 25% of the chargeMSEE, PEComment
-
I admit to an abundance of caution. Test away!Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
-
thanks Guys for the great info as usual
Quick Question for DEKA 8G4D: i have a 15 Watts Panel will it damage this Gel Cell battery if i connect it without a charge controler the spec on the PV says there is a no need for charge controler if i use one panel only but the Voltage peek at 15V and this GEl BT recomends no more than 14.10V i know this panel is too small to really do anything but since i have it there might as well use it right.Comment
Comment