Lead Acid Rechargeable Batteries

Lead acid rechargeable batteries are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, they are able to supply high surge currents, meaning that they are able to meet the power requirements of applications such as storage in back-up power supplies in mobile phone towers.

These sealed lead acid batteries have many used in the today's world. They come in a wide range of sizes, typically with voltages of 6V to 12V. Some typical uses are:

Emergency Lights
Uninterruptible power supplies (UPS)
Alarm Systems
Communication Systems
GEL Vs AGM Lead Acid Batteries

AGM (Absorbed Glass Mat)

These batteries contain only enough liquid to keep the specially designed glass mat wet. The glass mat is made to wick the battery electrolytes between the battery plates. If the AGM battery is broken no free liquid leaks out.

AGM batteries are preferred when a large amount of amps are required. The life expectancy remains excellent in most cases, if they are not discharged more than 60% between recharges and/or recharged fully every 3-6 months.

Gel Cell Batteries

These batteries contains silica type gel, which is a thick paste like material. It allows the electrons to flow between plates, but will not leak in a gel battery if the case is broken.
Gel Cell Batteries don't offer the same power capacity as do the same physical size as AGM batteries. Gel cell batteries excel in slow discharge rates and slightly higher operating temperatures and with excellent deep cycle capability. Recharging these batteries must be done correctly or it will suffer a premature failure."



What are lead acid rechargeable batteries used for?
Lead acid batteries are widely used if surge current is critical, even if other designs could provide higher energy densities. Large-format lead acid designs are widely used in settings like hospitals, and in stand-alone power systems. Their surge current properties make them attractive for use in motor vehicles to provide the high current required by starter motors.

How do lead acid rechargeable batteries work?
The oxygen in the active material (lead dioxide) reacts with the hydrogen ions to form water, and the lead reacts with sulphuric acid to form lead sulphate. The ions moving through the electrolyte then create the current flow.

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Description Price Capacity Nominal Voltage Dimensions Terminal Type Construction Designed for Cyclic Application Application Weight Flame Resistant Designed High Rate Application Eurobat Classification Operating Temperature Range Brand Range
RS Stock No. 537-5444
BrandRS PRO
HK$116.72
Each
units
1.2Ah 12V 97 x 43 x 52mm Faston F1 AGM Yes UPS 570g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 888-2471
Mfr. Part No.UP-VW1245P1
BrandPanasonic
HK$368.58
Each
units
7.8Ah 12V 151 x 64.5 x 101.5mm Faston F1 AGM - - 2.6kg Yes - 6 to 9 Years -15 → +50°C -
RS Stock No. 200-1415
Mfr. Part No.EN160-6
BrandYuasa
HK$3,083.86
Each
units
160Ah 6V 240 x 305 x 210mm M8 AGM - - 35kg - - 12 Years Plus -20 → +60°C -
RS Stock No. 265-1953
Mfr. Part No.RSAMP3707
BrandEnersys
HK$228.31
Each
units
2.5Ah 6V 69.9 x 113.8 x 46mm Tabs Pure Lead Yes - 540g - Yes - -40 → +40°C EnerSys Monobloc
RS Stock No. 720-2931
Mfr. Part No.LC-R063R4P
BrandPanasonic
HK$229.27
Each
units
3.4Ah 6V 60 x 34 x 134mm Faston F1 AGM - - 600g - - 6 to 9 Years -15 → +50°C -
RS Stock No. 537-5450
BrandRS PRO
HK$145.51
Each
units
2.3Ah 12V 178 x 35 x 60mm Faston F1 AGM Yes UPS 970g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 669-0482
Mfr. Part No.LC-X1224APG
BrandPanasonic
HK$1,147.29
Each
units
24Ah 12V 165 x 125 x 175mm M5 AGM - - 8.1kg - - 10 to 12 Years -15 → +50°C -
RS Stock No. 511-3476
Mfr. Part No.PE2.7-12 / NP2.7-12
BrandYuasa
HK$344.02
Each
units
2.7Ah 12V 102 x 79 x 55mm Faston F1 AGM - - 1.1kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 843-1339
Mfr. Part No.FG21803
BrandFiamm
HK$583.59
Each
units
18Ah 12V 181 x 76 x 167mm M5 AGM - - 5.8kg - - 3 to 5 Years -20 → +50°C -
RS Stock No. 707-3465
Mfr. Part No.RSAMP3715
BrandEnersys
HK$3,211.82
Each
units
38Ah 12V 206 x 250 x 97mm M6 Pure Lead Yes - 13.6kg Yes Yes 12 Years Plus -40 → +50°C Enersys PowerSafe
RS Stock No. 707-3402
Mfr. Part No.RSAMP3737
BrandEnersys
HK$1,918.46
Each
units
18Ah 12V 175 x 170.2 x 99.1mm M6 Pure Lead Yes - 6kg Yes Yes - -40 → +45°C Enersys Odyssey
RS Stock No. 597-813
Mfr. Part No.NP2.1-12
BrandYuasa
HK$155.98
Each
units
2.1Ah 12V 178 x 34 x 64mm Faston F1 AGM - - 820g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 843-1373
Mfr. Part No.FG10721
BrandFiamm
HK$133.64
Each
units
7.2Ah 6V 151 x 34 x 100mm Faston F1 AGM - - 1.2kg - - 3 to 5 Years -20 → +50°C -
RS Stock No. 707-3437
Mfr. Part No.RSAMP3775
BrandEnersys
HK$3,883.00
Each
units
68Ah 12V 176 x 330.7 x 168.2mm M6 Pure Lead Yes - 27.6kg Yes Yes - -40 → +45°C Enersys Odyssey
RS Stock No. 698-8091
BrandRS PRO
HK$160.13
Each
units
4Ah 12V 90 x 70 x 101mm Faston F1 AGM Yes UPS 1.5kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 814-821
Mfr. Part No.NP2.8-6RS
BrandYuasa
HK$188.85
Each
units
2.8Ah 6V 64 x 134 x 34mm Faston F1 AGM - - 570g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 720-2950
Mfr. Part No.LC-R121R3PG
BrandPanasonic
HK$303.22
Each
units
1.3Ah 12V 50 x 47.5 x 97mm Faston F1 AGM - - 550g - - 6 to 9 Years -15 → +50°C -
RS Stock No. 872-0092
Mfr. Part No.REC36-12
BrandYuasa
HK$1,278.99
Each
units
36Ah 12V 196 x 132 x 158mm M5 AGM Yes - - - - - -15 → +50°C -
RS Stock No. 373-0293
Mfr. Part No.6EP1935-6MD11
BrandSiemens
HK$889.74
Each
units
3.2Ah 24V 151 x 190 x 82mm Screw - - UPS 3.2kg - - - +5 → +40°C SITOP USV
RS Stock No. 198-8169
Mfr. Part No.NPL65-12I
BrandYuasa
HK$2,219.36
Each
units
65Ah 12V 174 x 350 x 166mm M6 AGM - - 23kg - - 10 to 12 Years -20 → +60°C -
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