This approach means that these cells can operate in the "Starved Electrolyte" condition without resorting to the normal reservoir of electrolyte as deployed above the plates of flooded type cells.

The carefully balanced negative plates, together with the advanced internal cell design, enable a recombination efficiency of approximately 98%!  In other words, the volume of hydrogen emitted from the battery is approximately 2%!  Thus, the need for specially ventilated room is eliminated.

SPACELL^® Batteries have the following characteristics:

• Field proven sealed gas recombination technology;
• No topping-up during their entire lifetime;
• Absorbed electrolyte, therefore no risk of acid leak or spattering;
• Maximum energy/volume ratio in terms of life expectancy;
• Robust due to use of special alloy plate with several alloying constituents,
  giving high mechanical strength to grids.

In terms of average operating temperatures, battery charging is normally applied as follows: 

0^oc (32^oF):      2.35 Volts                        25^oC (77^oF):    2.25 Volts

20^oC (68^oF):    2.27 Volts                        35^oC (95^oF):    2.21 Volts 

• Batteries classified in the so called "recombination" category according to the terminology of the Interpretation from Nr 84-02 dated 17/02/84 related to the norm NFC 15.100 (Test record Nr 293 217 from the Control Laboratory of Electrical Industries)
• Transport officials report 1996/01 of B.V.T. (National office of Technical Verifications) meeting the requirements of regulations of IMDG (International Maritime code for Dangerous Goods) and OACI (Organization of Civil International Aviation), UN2800, packing note 800.

CONSTRUCTION	CELL COMPONENTS
SEPARATOR	Temperature and acid resistant Borosilicate glass microfiber. Overlap plate edges to eliminate potential short circuits.
PLATE SUSPENSION	Bottom supported for added reliability.
SEDIMENT SPACE	N/A
JAR & COVER	Thermally sealed robust ABS to UL- HB20%, L.O.I. 28% (Optional)
ELECTROLYTE	Vacuum impregnated sulfuric acid.  Fully charged specific Gravity 1.28-1.30
VENT	Automatic flush mounted pressure relief valve with flame arresting disc.
THERMAL POSTS	Lead with brass inserts to reduce re-torquing requirements. Contact surfaces precision ground for positive contact with intercell connectors.
POST SEAL	Neoprene compression sleeve.
GRID MATERIAL	Lead Calcium
RELIEF VALVE
PRESSURE SETTING	0.3 BAR (4 - 6 PSI)
CELL PRESSURE TESTING	0.5 BAR (7 PSI)

 

Charge vs Voltage		Rate of Discharge		Average # of Discharges / year
State of Charge	Voltage	8 hours		4-6
100%	2.14 Vpc	5 hours		5-8
80%	2.09 Vpc	3 hours		8-10
60%	2.06 Vpc	1 hour		10-12
40%	2.02 Vpc	15 minutes		12-15
20%	1.97 Vpc

Capacity vs Temperature
Length of Discharge	-30ºC (-22ºF)	-25ºC (-13ºF)	-20ºC (-04ºF)	-15ºC (05ºF)	-10ºC (14ºF)	-05ºC (23ºF)	0ºC (32ºF)
5 mins to 59 mins	0.25	0.35	0.50	0.65	0.70	0.75	0.85
1 hr to 24 hrs	0.35	0.45	0.60	0.70	0.75	0.85	0.90
Length of Discharge	05ºC (41ºF)	10ºC (50ºF)	15ºC (59ºF)	20ºC (68ºF)	25ºC (77ºF)	30ºC (86ºF)	35ºC (95ºF)	40ºC (104ºF)
5 mins to 59 mins	0.90	0.93	0.97	1	1.04	1.07	1.09	1.11
1 hr to 24 hrs	0.92	0.95	0.98	1	1.03	1.04	1.05	1.06

Average Life Expectancy of High Quality Sealed Gas Recombination Lead Acid Batteries vs Temperature for a Cell with a Float Voltage of 2.27 Volts
TEMPERATURE	LIFE EXPECTANCY	FLOAT VOLTAGE	TEMPERATURE	LIFE EXPECTANCY
20ºC	X-0%	2.27	20ºC (68ºF)	X-0%
25ºC	X-08%	2.25	25ºC (77ºF)	X-08%
30ºC	X-25%	2.23	30ºC (86ºF)	X-18%
35ºC	X-45%	2.21	35ºC (95ºF)	X-25%
40ºC	X-60%
50ºC	X-75%
60ºC	X-95%

CONTAINER AND LID INFLAMMABILITY