25.6V 32Ah 26650 LiFePO4 Industrial Battery Backup

25.6V 32Ah 26650 LiFePO4 Industrial Battery Backup for Cabinets

A European manufacturer of industrial battery backup cabinets came to CM Batteries after several unmanned installations in northern climates lost backup power during winter cold snaps. The lead-acid battery packs they had used previously were bulky, needed regular maintenance checks, and lost too much usable capacity once cabinet temperatures fell below freezing. The customer needed a maintenance-free pack that could hold its rated capacity through deep cold, survive thousands of charge cycles without frequent replacement, and fit inside an existing metal cabinet frame.

CM Batteries engineered a 25.6V 32Ah 8S10P LiFePO4 battery pack in a metal-plate enclosure, validated for capacity retention down to -40°C and rated for over 2,000 cycles at 80% depth of discharge — replacing the lead-acid design without any change to the cabinet’s mounting layout. This configuration sits within CM Batteries’ broader custom 26650 battery pack range built for cold-climate industrial equipment.

Industrial Backup Cabinet Customer Overview

The customer designs and builds fixed backup power cabinets for unmanned industrial sites — telecom shelters, remote pump stations, and utility monitoring cabinets across cold-climate regions of Northern and Eastern Europe. Their cabinets are expected to run without a site visit for months at a time.

Because a single dead industrial battery backup cabinet can mean an unmonitored utility site during a winter storm, the reliability of the industrial backup battery pack directly affects the customer’s service-level commitments to municipal and industrial clients.

Backup Power Lost During Cold Snaps

The original lead-acid pack lost enough usable capacity below freezing that cabinets couldn’t ride through the utility outages they were meant to cover during the coldest weeks of winter.

CMB Solution:
Selected low-temperature 26650 LiFePO4 cells validated to retain ≥90% capacity at -40°C, so the cabinet keeps its backup runtime through deep winter conditions.

Frequent Maintenance Visits

Lead-acid batteries needed periodic terminal and electrolyte checks, requiring truck rolls to remote, hard-to-access cabinet locations.

CMB Solution:
Delivered a sealed, maintenance-free LiFePO4 battery pack rated for 2,000+ cycles at 80% DoD, cutting the need for routine site visits.

Exposed to Mechanical Shock in Transit

Cabinets are shipped and installed across rough terrain, and the customer’s plastic-cased packs had shown cracking during transport and installation.

CMB Solution:
Housed the 80-cell pack in a rigid metal-plate enclosure that fits the existing cabinet mounting points and withstands shipping and field handling.

8S10P 26650 LiFePO4 battery pack in a rigid metal enclosure

25.6V 32Ah 8S10P 26650 LiFePO4 Battery Pack Design

Product Highlights

  • Nominal voltage: 25.6V
  • Capacity: 32Ah
  • Configuration: 8S10P, 80 cells
  • Operating temperature: Charge -30°C to 60°C, discharge -50°C to 60°C
  • Low-temperature capacity retention: ≥90% at -40°C
  • Cycle life: 2,000+ cycles at 80% DoD
  • Enclosure: Metal-plate housing
  • Certification:ISO 9001-manufactured; UL / CE / IEC 62133 available upon request
  • Custom options:Voltage, capacity, terminal type, and enclosure finish
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25.6V 32Ah 8S10P LiFePO4 Battery Pack Parameter

No. Item Parameter Calculation / Remark
1 Nominal Voltage 25.6V  
2 Nominal Capacity 32Ah  
3 Minimum Capacity 31.36Ah  
4 Shipment Voltage /  
5 Initial Internal Impedance ≤52mΩ AC 1kHz
6 Standard Charge Voltage 29.2V  
7 Standard Charge Current 6.4A  
8 Max. Charge Current 16A  
9 Standard Discharge Current 6.4A  
10 Max. Discharge Current 96A  
11 Burst Discharge Current 192A ≤300ms
12 Discharge Cut-off Voltage 20.0V  
13 Cycle Life ≥2000 cycles Retention ≥80%
14 Charge Temperature -30°C ~ +60°C  
15 Discharge Temperature -50°C ~ +60°C  
16 Storage Temperature -20°C ~ +35°C ≤3 months
-20°C ~ +25°C ≤1 year
17 Weight About 7.0–8.0 kg  
18 Special Request Capacity retention ≥90% at -40°C;

Related Lithium Battery Pack Cases

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25.6V 32Ah 26650 LiFePO4 Battery Pack FAQs

Why does LiFePO4 outperform lead-acid in cold-climate backup cabinets?

Low-temperature LiFePO4 cells maintain a higher percentage of their capacity at low temperatures than lead-acid, and they don’t suffer from the electrolyte-freezing risk that limits lead-acid performance in extreme cold. They’re also lighter and require no periodic maintenance. Learn more about this.

Can this pack be retrofitted into an existing lead-acid cabinet?

In many cases, yes — CMB can match the enclosure dimensions and terminal layout of your existing cabinet mounting points. Share your current pack’s footprint and terminal spec for a compatibility review.

Does this 26650 battery pack support remote monitoring?

This specific configuration ships without a communication module. If you need remote state-of-charge monitoring, ask about CMB’s smart BMS options with RS485, CANBUS, or Bluetooth output.

Tailored Customization

Our design team can create custom battery designs for just about any device or machine.

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