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SigmasTek  |  SKU: BW-15720

FirstPower LFP1238 High Performance Replacement Battery 29.14 lb

18% off
New arrival
Sale price $150.99 USD Regular price $183.99
Shipping calculated at checkout.
Compatible replacement for FirstPower LFP1238 model
Uses Absorbent Glass Mat (AGM) technology for durability
Maintenance-free with spill-proof design for safety
U.L. Recognized and CE Certified for quality assurance
Comes brand new with a 1-year warranty for peace of mind
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 40 Ah

Terminal Type

Nut & Bolt

FirstPower LFP1238 Replacement Battery — Compatible with FirstPower LFP1238

Replace your failing pack with this replacement FirstPower LFP1238 rechargeable Sealed Lead Acid (SLA) battery, engineered to match or surpass OEM SLA specifications for the FirstPower LFP1238 model. Delivering consistent voltage, dependable capacity, and proven reliability, this battery is an efficient solution for restoring performance to your equipment. Whether you require a long-lasting battery for backup systems or a high-performance battery for day-to-day operations, this unit delivers.

Key Specifications

  • Compatible Model: FirstPower LFP1238
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Chemistry / Technology: Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 40 Ah
  • Terminal Type: Nut & Bolt
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year

Benefits

  • Durable construction for long service life — AGM technology minimizes electrolyte movement and improves robustness in high-vibration or enclosed applications.
  • Dependable high-performance battery — consistent 12V output and 40Ah capacity provide the runtime you need for critical equipment and emergency systems.
  • Low maintenance and safe — sealed, spill-proof design eliminates regular maintenance tasks and reduces corrosion and leakage risks.
  • Broad compatibility — ideal for UPS units, emergency backup systems, alarm panels, medical support devices, mobility equipment, and power tools requiring SLA batteries.
  • Certified quality — U.L. recognized and CE certified to meet industry safety and quality guidelines; shipped brand new for immediate installation.
  • Reliable connections — nut & bolt terminals offer secure mounting and stable electrical contact to maximize life span and minimize voltage drop.

Don’t let a weak battery halt your equipment. Choose this FirstPower LFP1238 replacement battery for a reliable, long-lasting solution. Order now to ensure continuous power and restore full performance to your device.

Technical Specifications

Voltage12 Volts
Amp Hours40 Ah
Terminal TypeNut & Bolt
Length (in.)7.76
Width (in.)6.5
Height (in.)6.69
Weight (lb.)29.11

Product Highlights

  • Brand Replacement : FirstPower LFP1238 Battery
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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