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Valence U-Charge LiFePO4 Batteries 12v/24v

Valence U-Charge LiFePO4 Batteries 12v/24v

Regular price $149.00 USD
Sale price $149.00 USD
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Shipping to Lower 48 USA states only via Ground Shipping. No international shipping including Hawaii, Guam, Puerto Rico. Non-USA customers click here.


Drop in replacement for lead acid battery! These Valence U-Charge LFP batteries are some of the safest you can buy, with twice the run-time and less than half the weight of similar sized lead-acid battery modules. Great for marine use! Excellent float and cycle life with zero maintenance offers end-users significant cost of ownership savings and peace of mind. The BMS (Battery Management System) is also designed to offer excellent command and control functionality. The 24v module allows a series connection up to x2 batteries to make 48 V.


Available in 2 versions (choose from dropdown menu):

  • 12V 40Ah (U1-12XP)
  • 24v 20Ah (U1-24RT)



  • 2800 cycles at 100% DOD
  • Exceptional voltage stability
  • Maintenance free
  • Inter module balancing
  • Can be charged using most standard lead-acid chargers
  • Communication of monitored data via Battery Management System (BMS)
  • Rugged mechanical design
  • Flame retardant plastics ABS/PC material (compliant to UL 94-V0, UL 94 5VB, & L.O.I. 32% per ISO 4589 and ASTM D2863)
  • LED battery status indicator
  • Manufactured in standard BCI sizes
  • Water/dust resistance: IP56
  • Shock and vibration: IEC62133, DIN VG96 924
  • Certifications: FCC Class B, CE, UL1642 (cells only)
  • Shipping Classification: UN 3480, Class 9


U1-24RT (24v) Specs:

U1-12XP (12v) Specs:

Nominal Module Voltage:  25.6 V

12.8 V

Nominal Capacity (C/5, 23°C):  20 Ah

40 Ah

Weight (appr.) kg:  6.4 kg

6.5 kg

Weight (appr.) lbs:  14.1 lbs

14.3 Ibs

L x W x H in Millimeters:  197 mm x 131 mm x 183 mm
L x W x H in Inches:  7.8″ x 5.1″ x 7.2″
(Dimensions including terminals)

L x W x H in Millimeters:  197 x 131 x 182mm
L x W x H in Inches:  7.8" x 5.1" x 7.2"
(Dimensions including terminals)

BCI Group Number:  U1R

BCI Group Number:  U1R

Terminals, Female-Threaded:  M6 x 1.0

Terminals, Female-Threaded:  M6 x 1.0

Specific Energy:  80 Wh/kg

79 Wh/kg

Energy Density:  110 Wh/l

110 Wh/l

Standard Discharging @ 25°C:
Max. Cont. Load Current:  30 A
Peak Load Current (30 sec):  60 A
Cut-off Voltage:  20 V

Standard Discharging @ 25°C:
Max. Cont. Load Current:  80 A
Peak Load Current (30 sec):  120 A
Cut-off Voltage:  10 V

Standard Charging:
Charge Voltage:  29.2 V
Float Voltage:  27.6 V
Recommended Current:  10 A
Charge Time @ C/2:  2.5 hrs

Standard Charging:
Charge Voltage:  
14.6 V
Float Voltage:  13.8 V
Recommended Current:  20 A
Charge Time @ C/2:  
2.5 hrs


  • Discharge temperature: -10°C to 50°C
  • Charge temperature: 0°C to 45°C
  • Storage temperature: -40°C to 50°C
  • Operating humidity: 5% to 95%, non-condensing

    Product video:




    Note that these are reclaimed packs, so the actual cell voltage you receive may be lower than the label shows. These items are sold for DIY and Second Life purposes. Listings that are specifically described as “untested” or “sold as-is” and cannot be returned, exchanged or refunded. We make no guarantees that all cells will be usable. Even when sold as “new”, “NOS”, or “like-new”, they may be in less than perfect condition. Buyer is responsible for proper cell recycling/disposal.

    If you buy a product from us and then realize you don't have, or don't want to acquire, the tool(s) or information needed to make our product(s) work for your specific build, this does not constitute valid grounds for replacements, exchanges or refunds. You are responsible for doing your due diligence before making any purchases from us.

    NEW YORK residents:
    On 3/2/2023 New York passed a law banning the sale of lithium-ion batteries for mobility devices that are not certified to UL 2271, and the assembly and reconditioning with cells removed from used batteries for commercial sale within the state of New York (more details here). New York residents, you are solely responsible for researching, understanding and complying with all pertinent regulatory rules, laws, statutes, and NY safety standards.

    Safety is important to us, we don't want people to get hurt or property to get damaged, especially when working with DIY and/or second-life lithium-ion batteries. All batteries everywhere are inherently dangerous, so we urge all who work with DIY and/or second-life lithium-ion batteries to take safety seriously so as to avoid causing any harm to self, others or property.

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