UPG UB12500 12V 50Ah AGM battery, offered as a CSB EVX12400 replacement
UPG UB12500 12V 50Ah AGM battery, offered as a CSB EVX12400 replacement

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CSB EVX12400 Battery Replacement

$154.95
SKU: 0526
UPC: 806593459771
Availability: Shipping Lead Time is 24 to 48 Hours
Shipping: Free shipping on orders $75 and up
Voltage: 12
Capacity: 50.0 Ah (20-hour rate at 2.50 A, 25C); 46.5 Ah at 10 hours, 42.5 Ah at 5 hours
Chemistry: AGM, sealed valve regulated lead acid, non-spillable
Terminal: Nut and bolt
Dimensions: 7.72 x 6.50 x 6.89 in (L x W x H); 7.17 in over the terminals
Features: UPG UB12500 shipped as a CSB EVX12400 case replacement; float rated 13.6 to 13.8 VDC
CSB EVX12400 Battery Replacement

CSB EVX12400 Battery Replacement

$154.95
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Description  

CSB EVX12400 Replacement - UPG UB12500 12V 50Ah AGM

Read this line before anything else. The battery that ships from this page is a UPG UB12500. It is a Universal Power Group product and CSB had no hand in building it. It is offered here as a replacement for the CSB EVX12400 because the case is almost the same block, 7.72 inches long by 6.50 wide standing 6.89 tall against the CSB's 7.76 by 6.50 by 6.71, and because it carries more capacity in that space. UPG rates it 50.0 amp hours at the 20 hour rate against the CSB part's 40.00, which is 25 percent more energy in a case a fifth of an inch taller and 1.13 lbs heavier. There is a trade on the other side. CSB publishes cycle counts for the EVX range and UPG does not publish them here, so if cycle life is the number your decision turns on, the CSB sheet is the one with the answer. Where this block pulls ahead is float: UPG gives a 13.6 to 13.8 volt float window, and CSB prints a dash in that row for the whole EVX range.

Warranty

Warranty. This battery carries a 1-year free replacement warranty through High-Tech Battery Solutions, Inc. Terms are confirmed in writing with your quote.

More Capacity in the Same Slot

50.0 Ah at the 20 hour rate
At 2.50 amps to 25°C, stepping down to 46.5 Ah over 10 hours, 42.5 over 5 and 30.0 over a single hour.
Float rated 13.6 to 13.8 volts
A published float window, which the CSB EVX range does not carry, so this block can hold standby duty as well as cycling duty.
7.72 by 6.50 by 6.89 inches
Within a fifth of an inch of the CSB EVX12400 on every dimension, at 30.2 lbs against 29.07.
  • Approximately 11 milliohms internal resistance - higher than the CSB EVX12400's 8.2, so the CSB block is the stronger one on a short heavy pull even though it holds less.
  • 45.3 amps over 30 minutes to 10.50 volts - 513.9 watts across the block, falling to 23.5 amps and 270.2 watts over a full hour.
  • Charge at 15 amps or less - UPG's stated ceiling, with a cycle-use control voltage of 14.5 to 14.9 volts.
  • Capacity moves with temperature - UPG publishes 102 percent at 104°F, 100 at 77°F, 85 at 32°F and 65 at 5°F, which is the figure to apply before sizing for a cold location.
  • Certified for air transport - UPG states DOT, IATA, FAA and CAB certification for this non-spillable AGM, and it is UL recognized under file MH 20567.

Technical Specifications

UPG UB12500 Specifications
Part ShippedUPG UB12500 (UPG No. 45977). This is a Universal Power Group battery, not a CSB battery
Offered As A Replacement ForCSB EVX12400, on case dimensions; capacity is higher at 50.0 Ah against 40.00 Ah
Battery TypeAGM, sealed valve regulated lead acid, non-spillable
Nominal Voltage12V
Capacity, 20 Hour Rate50.0 Ah at 2.50 A, 25°C (77°F)
Capacity, 10 Hour Rate46.5 Ah at 4.65 A
Capacity, 5 Hour Rate42.5 Ah at 8.50 A
Capacity, 1 Hour Rate30.0 Ah at 30.00 A
Discharge, 30 Minutes45.3 A to 10.50 V (513.9 W per block)
Discharge, 1 Hour23.5 A to 10.50 V (270.2 W per block)
Maximum Charge Current15 A or smaller
Internal ResistanceApproximately 11 milliohms
Terminal TypeNut and bolt on the build we stock; UPG lists this part number in more than one terminal configuration, so the terminal is confirmed in writing with your quote
Length7.72 inches (196.1 mm)
Width6.50 inches (165.1 mm)
Height6.89 inches (175.0 mm); 7.17 inches (182.1 mm) over the terminals
Weight30.2 lbs (13.7 kg)
Float Charging Voltage13.6 to 13.8 VDC per battery
Cycle Charging Voltage14.5 to 14.9 VDC per battery, initial current 15 A or smaller
Capacity vs Temperature102 percent at 104°F; 100 percent at 77°F; 85 percent at 32°F; 65 percent at 5°F, all at the 20 hour rate
Shelf Life91 percent of rated capacity at 3 months, 82 percent at 6, 64 percent at 12, measured at 77°F
StandardsUL recognized under file MH 20567; UPG states DOT, IATA, FAA and CAB certification for air transport
Warranty1 year free replacement through High-Tech Battery Solutions, Inc.
Technical Documentation
UPG UB12500 specification sheet (PDF)

Where This Battery Is Used

  • Mobility chairs and scooters - the common home for a 12 volt block in this footprint, where the extra 10 amp hours read as extra range.
  • Patient lifts and powered medical equipment - daily cycling against a fixed overnight charge.
  • Standby and backup duty - the published float window makes this one usable where a battery sits charged between events, which the CSB EVX range is not rated for.

Ordering and Freight

At 30.2 lbs a single block moves by parcel carrier, and pairs or larger sets palletize to LTL. Freight sets ship pre-paid to a commercial address, and a residential or limited-access delivery adds $100, the liftgate and access charge the carrier passes through. Send the terminal type you need and the equipment it is going into, and a specialist confirms the build and returns pricing and lead time in writing in 24 to 48 hours.

Frequently Asked Questions

Is this a CSB battery?

No. This page is named for the CSB EVX12400 because that is the part people are replacing, but what ships is a UPG UB12500 from Universal Power Group. Every specification on this page comes from UPG's own sheet, which is linked above. If you want the genuine CSB part, it is listed separately and the link at the foot of this page goes straight to it.

Why does this hold 50 amp hours when the CSB part holds 40?

Different plate design in a case of almost the same size. UPG builds this one for capacity and rates it 50.0 amp hours over 20 hours; CSB builds the EVX12400 for deep cycling and rates it 40.00 over the same window with 8.2 milliohms of internal resistance against this block's 11. More capacity and more resistance usually travel together. The practical reading is that this block runs longer and the CSB block hits harder.

Can it be left on a charger permanently?

Yes, within the published window. UPG gives a float control voltage of 13.6 to 13.8 volts, which is what a standby charger should be holding. Use the cycle-use figures of 14.5 to 14.9 volts only where the battery is being worked and recharged rather than held. Getting those two the wrong way round is the most reliable way to shorten a sealed lead acid battery's life.

How long can it sit before it needs a charge?

UPG publishes the curve: 91 percent of rated capacity after three months at 77°F, 82 percent after six, and 64 percent after twelve. A spare kept on a shelf should get a top-up charge at six months and certainly before twelve. Warmer storage runs the numbers down faster, so a battery kept in an unconditioned space needs charging sooner than the table suggests.

The genuine CSB part: CSB EVX1240040.00 Ah at the 20 hour rate, 8.2 milliohms, with CSB's published cycle figures and a 1-year CSB term.
Not sure which of the two you want?

Tell a specialist what the battery powers and how hard it gets worked. Capacity favors this block, discharge strength and published cycle life favor the CSB part, and the answer is usually obvious once the duty is on the table.

Call 1-877-775-4381  ·  battery specialists, not a call center

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov (State of California only).

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