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21st Century Scientific Replacement Batteries

The widest selection of 21st Century Scientific replacement batteries at low prices and with fast nationwide delivery across the US.
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Batteries


On this page: 21st Century Scientific Replacement Batteries
 • 9 Batteries with price from $65.95 To $330.00 (USD)
$83.95
12 Volt
35 ah
420 Wh
L: 7.72"
H: 6.22"
W: 5.14"
23.40 lbs

Power-Sonic PS-12350 12 volt 35 Ah Rechargeable SLA battery. Our Power-Sonic PS-12350 is commonly used in emergency lighting, alarm systems, UPS systems, medical equipment, wheelchairs, scooters and industrial equipment.

(This is one Battery – Please verify quantity needed for your application before ordering)

See chargers for this battery

Replacement for: 21st Century AGM1248T

Qty
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Technical Specification Sheet
Safety Data Sheet
There is a generic alternative to this product for $65.95. See the 12v 35Ah Rechargeable Sealed Lead Acid (Rechargeable SLA) Battery | BG-12350NB.
$330.00
12 Volt
100 ah
1200 Wh
L: 12.14"
H: 6.65"
W: 8.19"
142 lbs

The BG-121000NB is a high quality 12 volt 100 Ah Rechargeable Sealed Lead Acid battery offering exceptional value for money.  (Set of Two Batteries) 

See chargers for this battery

Replacement for: 21st Century 1CP, 21st Century 1FL, 21st Century Big Bounder, 21st Century Bounder, 21st Century Bounder Gurney, 21st Century Bounder Plus, 21st Century Sportster Stretch, 21st Century Big Bounder H-Frame, 21st Century Bounder Plus Conventional, 21st Century Bounder Plus H-Frame, 21st Century Bounder Plus Standing H-Frame

Qty
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Technical Specification Sheet
Safety Data Sheet
There is a premium alternative to this product for $588.00. See the 12V 100AH Deep Cycle Gel Battery (Qty of 2).
$73.96
12 Volt
18 ah
216 Wh
L: 7.13"
H: 6.59"
W: 3.00"
23.20 lbs

Two high quality and low cost 12 volt 18 Ah Sealed Lead Acid Batteries offering exceptional value for money. They are an ideal replacement battery pack for the original Equipment Manufacturers (OEM) installed unit.

Replacement for: 21st Century Bounder Plus 21.5" Narrow Base H-Frame

Qty
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Technical Specification Sheet
Safety Data Sheet
$65.95
12 Volt
35 ah
420 Wh
L: 7.72"
H: 6.14"
W: 5.14"
23.70 lbs

The BG-12350NB is a high quality 12 volt 35 Ah Rechargeable Sealed Lead Acid battery offering exceptional value for money.

(This is one Battery – Please verify quantity needed for your application before ordering)

See chargers for this battery

Replacement for: 21st Century AGM1248T

Qty
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Technical Specification Sheet
Safety Data Sheet
There is a premium alternative to this product for $139.95. See the BCL-12350 Lithium Iron Phosphate.
 
$128.00
Bulk Discounts
Qty Price
50-99  $115.00
100+  $112.00
*Note:
 
12 Volt
55 ah
660 Wh
L: 9.04"
H: 8.15"
W: 5.45"
40 lbs

The BG-12550NB is a high quality 12 volt 55 Ah Rechargeable Sealed Lead Acid battery offering exceptional value for money.

(This is one Battery – Please verify quantity needed for your application before ordering)

See chargers for this battery

Replacement for: 21st Century Scientific 1BB

Qty
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Technical Specification Sheet
Safety Data Sheet
There is a premium alternative to this product for $179.95. See the Power-Sonic PS-12550 | Rechargeable SLA Battery 12v 55ah.
$238.00
12 Volt
55 ah
660 Wh
L: 9.04"
H: 8.15"
W: 5.45"
80 lbs

The BG-12550NB is a high quality 12 volt 55 Ah Rechargeable Sealed Lead Acid battery offering exceptional value for money.  (Set of Two Batteries)

See chargers for this battery

Replacement for: 21st Century 1BB

Qty
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Technical Specification Sheet
Safety Data Sheet
$287.98
12 Volt
75 ah
900 Wh
L: 10.25"
H: 8.15"
W: 6.60"
103 lbs

The BG-12750NB is a high quality 12 volt 75 Ah Rechargeable Sealed Lead Acid battery offering exceptional value for money.  (Set of Two Batteries)

See chargers for this battery

Replacement for: 21st Century Bounder Plus 23.5" Narrow Base H-Frame

Qty
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Technical Specification Sheet
Safety Data Sheet
$139.95
12.80 Volt
35 ah
448 Wh
L: 7.50"
H: 6.50"
W: 5.00"
12 lbs
12.8 Volt 35 ah Lithium Iron Phosphate (LifePo4) battery. Replaces Sealed Lead Acid batteries.

(This is one Battery – Please verify quantity needed for your application before ordering)

Replacement for: 21st Century AGM1248T

Qty
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$179.95
save 8%
12 Volt
55 ah
660 Wh
L: 9.04"
H: 8.15"
W: 5.45"
40 lbs

Power-Sonic PS-12550 12 volt 55 Ah Rechargeable SLA battery. Our Power-Sonic PS-12550 is commonly used in emergency lighting, alarm systems, UPS systems, medical equipment, wheelchairs, scooters and industrial equipment.

(This is one Battery – Please verify quantity needed for your application before ordering)

See chargers for this battery

Replacement for: 21st Century Scientific 1BB

Qty
.
Technical Specification Sheet
Safety Data Sheet
 
    • 5 out of 5:
    • "This new battery for my GE portable phone was a perfect match to my original. Working perfectly and charged quickly. Great price"
    • Michael P., February 10, 2024
    • 5 out of 5:
    • "Working great"
    • saminatlanta, February 10, 2024
    • 5 out of 5:
    • "Del on time"
    • Richard Drew, February 08, 2024
    • 5 out of 5:
    • ":-)"
    • M, February 07, 2024
    • 5 out of 5:
    • "As described and a good price"
    • robert, January 28, 2024
    • 5 out of 5:
    • "Good deal"
    • Leo Huff , January 28, 2024
    • 5 out of 5:
    • "Fast shipping!!! Great seller!!! Very happy!!!"
    • Shane Hughes, January 27, 2024
    • 5 out of 5:
    • "perfect fit"
    • Rodney Jones, December 13, 2023
    • 5 out of 5:
    • "Fast shipping Great Seller"
    • Li P., December 09, 2023
    • 5 out of 5:
    • "They were just what I needed."
    • Amazon Customer, December 06, 2023
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