LiFePO4 starting power
1400CA of cranking output in the original family-size footprint.
27M Dual Purpose BUYER GUIDE
PowerTex 27M Dual Purpose battery specifications and fitment
This 12.8V LiFePO4 starting battery provides 1400CA of cranking output and 105Ah of rated capacity in a 27M Dual Purpose case weighing 23 lb.
Use the specifications below with your vehicle manual and current battery label. Group size alone does not guarantee compatibility.
Key specifications
| Specification | 105Ah |
|---|---|
| Rated capacity | 105Ah |
| Cranking amps | 1400CA |
| Weight | 23 lb |
| Price | $899.99 |
Shared specifications12.8V nominal voltage12 x 6.8 x 8.7 in caseBCI Group 27M Dual Purpose
Check compatibility before ordering
- Battery group: confirm your application uses BCI Group 27M Dual Purpose.
- Physical fit: verify the 12 x 6.8 x 8.7 in case, hold-down, and terminal orientation.
- Starting requirement: confirm that 1400CA meets the vehicle manufacturer's requirement.
- Charging system: confirm compatibility with a 12.8V LiFePO4 starting battery.
- Vehicle connections: check for an OEM sensor port, vent, or special terminal connection that must be retained.
For marine use, also verify the engine manufacturer's approved battery requirements for the exact outboard model.
COMMON QUESTIONS
27M Dual Purpose LiFePO4 battery FAQ
Will this fit every application that lists Group 27M Dual Purpose?
Not automatically. Verify case dimensions, terminal orientation, hold-down, required cranking amps, charging-system compatibility, and any sensor or special connection used by the vehicle or boat.
Do I need a special charger?
Use a charger with a 12.8V LiFePO4-compatible charging profile and follow the PowerTex instructions. Avoid lead-acid-only reconditioning or desulfation modes.
What does the battery management system do?
The integrated BMS protects against overcharge, over-discharge, and short-circuit conditions while monitoring battery operation.
How does emergency starting work in the PowerTex app?
If low charge or BMS protection shuts down the main output, use the PowerTex app to activate the battery's emergency starting reserve directly from your phone. Recharge the battery and diagnose the cause after use.
PRODUCT DETAILS
A lighter 27M Dual Purpose starting and deep-cycle battery built for dependable power
The PowerTex Group 27M Dual Purpose is a 12.8V LiFePO4 dual-purpose battery designed for strong cranking performance, lower battery weight, and integrated electrical protection.
Integrated BMS protection
The battery management system protects against overcharge, over-discharge, and short-circuit conditions.
PowerTex app control
Use the PowerTex app to review battery voltage, current, and status from a compatible phone.
App-activated emergency start
If low charge or BMS protection shuts down the main output, activate the battery's emergency starting reserve from your phone in the PowerTex app.
5-year prorated limited warranty
Coverage is subject to the terms for this battery. Review the automotive warranty terms.
IMPORTANT FITMENT NOTE
Confirm more than the group number
This is a PowerTex aftermarket component, not an OEM battery. It does not include the sensor port found on some original batteries. Verify the case, terminals, hold-down, charging system, and vehicle connections before ordering.
Safety documentation
Contact PowerTex for safety and transport documents for your exact battery model. Confirm any required certification and environmental rating before purchase.
Always follow the vehicle manufacturer and PowerTex installation and charging requirements.
PowerTex Batteries BCI Group 27M Dual Purpose Lithium Deep Cycle & Cranking LiFePO4 RV & Marine Battery
Most items ship within 24 hours, excluding weekends and major holidays.
Return within 30 days of delivery. Shipping fees are non-refundable.
PowerTex Batteries BCI Group 27M Dual Purpose Lithium Deep Cycle & Cranking LiFePO4 RV & Marine Battery
Powertex BCI Group 27M Dual Purpose Lithium Battery
Maximized Longevity for Marine & RV Applications
Powertex Group 27M Dual-Purpose Lithium Battery is engineered to handle both high-cranking power and deep-cycle demands, making it ideal for center consoles, bass boats, and larger vessels, where it provides reliable engine starting and sustained power for electronics. It also excels in powering trolling motors and fish finders with extended runtime and minimal voltage drop. In RV and camper applications, this battery serves both as a chassis (starter) and a house battery for appliances and accessories, offering versatility for a variety of needs. With a high discharge rate and faster recharging, it keeps up with the demands of modern marine and RV systems.
Battery Management System (BMS)
Experience peace of mind with our cutting-edge Battery Management System (BMS), acting as a vigilant protector against overcharge, over-discharge, and short-circuit incidents. This intelligent system tirelessly monitors and controls battery performance, ensuring both your safety and the durability of your investment.
Optimized for Inboard & Outboard Motors
Powertex lithium batteries deliver the reliable cranking power needed to start inboard & outboard motors, including Mercury Marine®-approved models. With faster charging, lightweight construction, and superior cycle life, they provide consistent, high-performance starts while reducing overall boat weight for improved fuel efficiency and handling. Built to endure harsh marine conditions, these batteries ensure trouble-free operation on the water, making them the ideal choice for powering your outboard motor with confidence.
Built for Marine Conditions
For marine use, verify the exact battery model against your engine and onboard electrical requirements. Secure the battery, protect the terminals, and keep it out of standing water. Confirm the model-specific environmental rating with PowerTex before installation.
Unmatched Safety Standards
Use the battery only in a compatible installation with secure mounting, protected terminals, and approved charging. Do not submerge or use a damaged battery. Contact PowerTex for safety documentation and environmental ratings specific to this model.
App-Activated Emergency Start
If low charge or BMS protection shuts down the battery’s main output, activate its emergency starting reserve from your phone in the PowerTex app. Recharge the battery and diagnose the cause after use.
Bluetooth Connectivity for Easy Monitoring
Take full control of your battery with Bluetooth connectivity. Using the Powertex app on your smartphone, you can monitor your battery’s voltage, current, and status in real-time. Additionally, you can turn off the battery to prevent any potential discharge when your boat or RV is not in use, ensuring it stays ready for your next adventure.
Frequently Asked Questions
What are the benefits of Powertex's marine & RV lithium batteries over lead-acid?
Compare this battery's rated capacity, cranking output, weight, and charging requirements with your existing battery. Confirm compatibility with your engine and electrical loads before choosing it for starting or deep-cycle use.
Do I need a special charger for Powertex Batteries?
Powertex lithium batteries are compatible with most 12V lithium-compatible chargers, but it is important to use a charger that is specifically designed for LiFePO4 batteries. We recommend using chargers with proper voltage settings to ensure safe and efficient charging, and to protect the battery’s Battery Management System (BMS).
Can I use Powertex Batteries to start my boat or RV engine?
Yes, Powertex lithium batteries are designed to provide the necessary cranking power for both inboard and outboard motors, making them ideal for marine use. Additionally, the Group 27M battery works for RV and camper applications, providing starter power for your engine as well as house power for appliances and electronics.
How does the Bluetooth remote shutoff feature work?
The Bluetooth feature allows you to monitor your Powertex battery's performance in real-time via a mobile app. Using the app, you can view voltage, current, and status. The remote shutoff feature enables you to turn off the battery when it’s not in use, helping to prevent any potential discharge when your boat or RV is idle, ensuring you don’t lose charge unnecessarily.
How long do Powertex lithium batteries last in marine & RV use?
Battery life varies with charging, temperature, storage, electrical loads, and depth of discharge. Follow the PowerTex instructions for this model; no fixed service life or cycle count is promised here.
Do Powertex Batteries work in extreme temperatures?
Yes, Powertex lithium batteries are built to operate in a wide temperature range. They function effectively in temperatures from -4°F to 140°F (-20°C to 60°C), making them suitable for use in both cold and hot environments. This makes them a great choice for both marine environments and RV adventures in varying weather conditions.
Are Powertex lithium batteries safe and maintenance-free?
Powertex lithium batteries are extensively tested for safety and meet strict industry standards. They feature overcharge, over-discharge, and short-circuit protection through an advanced Battery Management System (BMS). Additionally, they are maintenance-free and do not require regular upkeep like lead-acid batteries. Their robust construction ensures safety from high impacts, collisions, and vibrations, making them a safe and reliable option for marine and RV use.
Powertex LiFePO4 BCI Group 27M Dual-Purpose Battery – The Ultimate Marine & RV Power Solution
Reliable Power for Starting & Deep Cycle Needs
Introducing the Powertex LiFePO4 BCI Group 27M Dual-Purpose Battery—engineered for both high-performance cranking and deep-cycle applications. Whether you're starting your boat’s engine or powering onboard electronics, this lithium battery ensures superior reliability, longevity, and efficiency compared to traditional lead-acid batteries.
Now Approved for Mercury Marine® Outboards
Mercury Marine® has officially recognized lithium starting batteries for select outboard models, ensuring boaters achieve optimal performance. The Powertex Group 27M battery meets Mercury’s specifications, delivering powerful and reliable engine starts while providing sustained energy for marine electronics.
Key Benefits:
- Cranking & Deep Cycle in One – Delivers high cold-cranking amps (CCA) for reliable engine starts while providing sustained power for trolling motors, fish finders, and RV appliances.
- Bluetooth Monitoring & Control – Track real-time battery status, including voltage, state of charge, and performance data, directly from your smartphone.
- Remote Battery Shutoff – Turn the battery off via the Bluetooth app when your boat or RV is not in use to prevent unwanted discharge and extend battery life.
- Mercury Marine® Approved Compatibility – Designed to meet Mercury’s lithium battery requirements for an approved list of outboards, ensuring reliable starting power.
- Longer Cycle Life – Offers up to 20 times the cycle life and five times the float/calendar life of lead-acid batteries, reducing replacement costs and total cost of ownership.
- Lighter Weight – Weighs approximately 40% of a comparable lead-acid battery, making installation and handling easier. A true "drop-in" replacement.
- Higher Power Output – Delivers twice the power of a lead-acid battery, even at high discharge rates, while maintaining a high energy capacity.
- Advanced Battery Management System (BMS) – Protects against overcharge, over-discharge, short circuits, and extreme temperatures for enhanced reliability.
- App-Activated Emergency Start – Use the PowerTex app to activate the battery's emergency starting reserve from your phone if low charge or BMS protection shuts down the main output.
- Fast Charging – Charges significantly faster than lead-acid alternatives, minimizing downtime.
- Wider Temperature Range – Operates effectively in extreme conditions, from -4°F to 140°F.
- Superior Safety – Lithium Iron Phosphate (LiFePO4) chemistry eliminates explosion or combustion risks due to high impact, overcharging, or short circuits.
- Increased Flexibility – Modular design allows for up to four batteries to be connected in parallel for expanded capacity.
- Water & Vibration Resistant – Built to withstand harsh marine environments with IP65 and IP67 waterproof ratings.
Optimized for Marine, RV & Camper Vans
Perfect for marine applications, this battery is compatible with outboard motors and onboard electronics. It’s also ideal for RVs and camper vans that require both engine-starting power and reliable deep-cycle energy for off-grid adventures.
Safety & Certifications
Built with UL-certified Grade A cells, our battery is puncture-resistant, fire-safe, and meets strict UN38.3, MSDS, IEC 62133, and 62619 safety standards.
Power Your Adventures with Confidence!
Upgrade to Powertex LiFePO4 technology for a dependable, high-performance dual-purpose battery that keeps you moving—whether on land or at sea.
Uncertain about which battery fits your car or motorcycle? Our tool simplifies the process. Just input the year, make, and model of your vehicle, and it will present you with the best option! If your model isn't listed, reach out to us at 1 (888) 593-1029, utilize the live chat feature, or contact us with your vehicle's details for further assistance!