Bluetooth 12V 165Ah Group 31 LiFePO4 Lithium Battery for RV and Marine
EG-12165A — 12V 165Ah Group 31 LiFePO4 Lithium Battery for Compact RV & Marine Systems
This 12V 165Ah LiFePO4 lithium RV battery is purpose-built for RV and marine power systems, delivering stable energy output in a compact footprint. It is well suited for onboard electrical loads and mobile energy setups that require dependable, long-duration power.
Compared with traditional batteries, it provides longer service life, higher usable capacity, and significantly lower weight, helping reduce overall system burden while increasing real runtime for onboard equipment.
Designed for deep-cycle operation, it supports frequent charging and discharging with consistent performance, making it a reliable power solution for RV travel, boat applications, and mobile off-grid use.
EG-12165A 12V 165Ah Group 31 LiFePO4 Battery — High Capacity Power for Space-Limited Systems
- The EG-12165A 12V 165Ah Group 31 LiFePO4 battery is a premium lithium iron phosphate solution built for compact RV, marine, camper van, boat, and solar off-grid battery compartments.
- It delivers 2112Wh usable energy in a standard Group 31 size — providing 65% more capacity than typical 100Ah Group 31 batteries with no installation modifications required.
- Designed for users who need higher power density and longer runtime in limited space, this 12V 165Ah Group 31 lithium battery offers stable performance, deep cycle durability, and reliable off-grid energy.
More Capacity • Longer Runtime • Greater Off-Grid Freedom
Limited battery space is common in RV and marine systems. This RV 12V 165Ah Group 31 LiFePO4 lithium battery increases capacity without increasing footprint, helping you run devices longer and reduce the need for multiple batteries.
Ideal for RV, marine, and off-grid applications that demand extended runtime and simplified battery bank design.
EVE Grade-A LiFePO4 Cells — Safety and Longevity at the Core
The bluetooth 12V 165Ah RV lithium battery is built with EV Grade A LiFePO4 prismatic cells, delivering exceptional consistency, thermal stability, and long cycle durability.
Compared with standard lithium chemistries, this 165Ah EVE grade-A cell platform is specifically engineered for demanding mobile and energy storage applications where safety and lifespan are critical.
By using premium cells from leading manufacturers such as EVE Energy, the system ensures tighter cell matching, lower internal resistance variation, and more predictable long-term performance.
EVE Grade A Cell Benefits:
- Strict grading and capacity matching standards
- Lower self-discharge and better storage behavior
- Stronger tab welding and sealing reliability
- High vibration tolerance for mobile systems
Combined with reinforced internal structure and cell fixation design, the battery maintains stable electrical and mechanical performance under vibration, transport, and mobile installation conditions such as RV, marine, and off-grid systems.
Advanced BMS — 20+ Protection Functions
The integrated smart BMS continuously monitors and protects the group 31 12v 165ah rv lithium battery operation in real time.
Protection Coverage
Overcharge protection
Over-discharge protection
Overcurrent protection
Short circuit protection
Over-temperature protection
Low-temperature charge protection
Automatic low-temp recovery
Cell balancing
Voltage anomaly detection
Low-temperature charging protection automatically stops charging below freezing and resumes safely when temperature rises.
Your safety remains the first priority in every operating condition.
Reinforced Internal Structure — Built for Mobile Environments
Unlike generic lithium batteries, this bluetooth 12v 165Ah Group 31 LiFePO4 lithium RV battery uses a customized structural layout.
Design improvements include:
- Enhanced internal cell compression
- Shock-resistant structure
- Improved heat dissipation channels
- Reduced vibration stress
- Stronger internal fixation
This is particularly important for RV travel; Off-road vehicles; Marine boats; Mobile solar trailers
Lithium vs Lead-Acid — Major Upgrade in Every Dimension
Smart Bluetooth Battery — Real-Time Monitoring & Control
The built-in Bluetooth feature transforms this Group 31 165Ah lithium battery into an intelligent energy device. Users can monitor and manage battery status directly from their smartphone.
Easy Connection
- Scan QR code on battery
- App auto-detect within 10 meters
- Automatic pairing
- This is especially valuable for RV owners and boat users who want quick system visibility without installing extra monitors.
Smart Monitoring Functions
You can view:
- State of Charge (SOC); Battery voltage
- Current flow; Power level
- Remaining runtime estimate; Charge/discharge status
- Capacity tracking
Remote Functions: Discharge on/off control; Battery power-off control
Application:
This battery is widely deployed in: Compact RV power systems; Camper vans; Travel trailers; Marine boats & yachts; Mobile work vehicles
Built for Outdoor & Marine Conditions
The battery housing is designed for demanding environments.
- IP65 waterproof & dustproof
- ABS rugged enclosure
- Corrosion-resistant terminals
- Vibration resistant
- Suitable for mobile mounting
- Operating temperature range supports both cold-region travel and hot-climate installations.
Specification:
Frequently Asked Questions
Q1 — Is this 12V 165Ah lithium battery a true Group 31 size replacement?
Yes. The EG-12165A is designed in a standard Group 31 footprint, making it a drop-in replacement for most Group 31 lead-acid, AGM, and gel batteries. It fits common RV and marine battery compartments without modification.
Q2 — How much longer will a 165Ah battery run compared to a 100Ah Group 31 battery?
A 12V 165Ah LiFePO4 battery provides about 65% more usable energy than a 100Ah battery.
In real usage, this can extend a 50W RV refrigerator runtime by 16+ additional hours, depending on system efficiency and environment.
Q3 — Can this Group 31 lithium battery run high-power RV appliances?
Yes. With a 165A smart BMS and 2112W continuous output, this battery supports high-demand loads when used with a proper inverter system, including:
RV air conditioners (with inverter)
- Coffee makers; Microwaves
- Power tools; Marine electronics
Always confirm your inverter rating and surge requirements with us if unsure.
Q4 — Does the battery support Bluetooth monitoring?
Yes. This 12V 165Ah Bluetooth LiFePO4 battery includes built-in Bluetooth monitoring.
You can view in real time:
- SOC (state of charge); Voltage; Current
- Power; Capacity; Remaining runtime
- Charge/discharge status
Connection distance is up to about 10 meters via mobile app.
Q5 — Does it have low-temperature charging protection?
Yes. The battery includes low-temperature charging protection through the smart BMS.
Charging automatically stops below 0°C / 32°F
Charging resumes automatically at 5°C / 41°F
Discharging is allowed down to −20°C / −4°F
This protects cell life and improves safety in cold-weather RV and marine use.
Q6 — How fast can a 12V 165Ah LiFePO4 battery be fully charged?
With a 40A LiFePO4 charger, full charge takes about 4.2 hours.
Supported charging methods include:
- LiFePO4 AC charger
- Solar + MPPT controller (≥700W recommended)
- Alternator + DC-DC charger
- Generator + AC-DC charger
Q7 — How many lead-acid batteries does this replace?
One 12V 165Ah lithium battery can replace about:
3 × 12V 100Ah lead-acid batteries in usable energy
Up to 9 lead-acid batteries over a 10-year lifecycle due to longer cycle life
You also gain major weight and space savings.
Q8 — Is the battery safe for marine and outdoor installation?
Yes. It is designed for RV and marine environments with:
- IP65 waterproof & dustproof housing
- ABS flame-retardant enclosure
- Vibration-resistant internal structure
- EV Grade LiFePO4 cells
- 20+ BMS protection functions
Q9 — Can multiple batteries be connected together?
Yes. The battery supports expansion up to:
4P4S (4 in parallel and 4 in series)
This allows higher capacity or higher voltage system configurations when properly designed.
Contact us for wiring guidance.
Q10 — Is this battery suitable for RV dealers and distributors?
Yes. We support:
Bulk orders
OEM branding
Custom labeling
Distributor programs
Technical support
Fast production lead times
Contact us to request dealer pricing and partnership details
Send Inquiry:
Ready to Source the 12V 165Ah Group 31 LiFePO4 Lithium Battery?
Whether you are an RV equipment distributor, marine supplier, solar installer, brand owner, or system integrator, we actively support your business with bulk orders, OEM branding, fast production, and professional engineering support.
Just fill the form with your correct contact information, and our sales will reply within 6 hours
Product & Packaging Details
Q: Do batteries include protection circuits（BMS) and connectors?
A:Protection: We supply batteries with BMS built in Protection Circuit Modules (PCM).
Connectors: We normally use standard like anderson,M8 lugs,Fast plugs or depends on OEM customer's demends.
Q: Are batteries Grade-A and brand new?
A: Yes, we use 100% brand new, Grade-A cells in all our batteries.
Q: Can you print our logo on the batteries?
A: Yes, we offer free custom logo printing with a minimal MOQ requirement.
Q: What is your standard packaging? Can it be customized?
A: Our standard is a white box per battery. We fully support customized packaging, including carton box and logo design.
Yes. EGbatt is a manufacturer located in Shenzhen, Guangdong, China. It designs and produces LiFePO4 battery packs for energy storage, electric forklifts, marine applications, golf carts, RVs, and UPS systems.
Based on automated production technology, the current product lead time is 15-25 days.
The company has strategic cooperation agreements with top manufacturers like EVE and REPT, and insists on using A+ tier One lithium iron phosphate cells for its solar batteries.
For 48V inverters, compatible brands include Victron Energy, Goodwe, Studer, Solis, LuxPower, and others. For high-voltage three-phase inverters, compatible brands include Atess, Solinteg, SAJ, Goodwe, and Solis.
EGbatt offers dealer customers a 10-year warranty and technical service for its energy storage battery products.
DoD describes how much of the battery's capacity has been used. A DoD of 100% means the battery is completely empty, while 0% means it is full.
SoC reflects the battery's charge level. A SoC of 100% means the battery is full, and 0% means it is empty.
C-rate, or power factor, indicates how quickly a battery can be charged or discharged relative to its capacity. A rating of 1C means the battery can be fully charged or discharged in one hour.
The battery uses Lithium Iron Phosphate chemistry and provides a cycle life of over 6,000 cycles at 90% Depth of Discharge, and over 10 years at one cycle per day.
kW (kilowatt) is a unit of power, measuring the rate of energy production or consumption. kWh (kilowatt-hour) is a unit of energy, measuring the total amount of work done or energy used over time.
EGbatt home batteries are suitable for both indoor and outdoor installation (depending on the model's protection level) and offer floor-standing or wall-mounted options. Common locations include garages, attics, or under eaves.
This depends on the load. As a realistic example, a 10kWh battery could run ten 100-watt light bulbs for 12 hours without recharging.
The number varies based on home size, energy consumption history, and personal goals (like which devices to run during an outage). For most systems, 2 or 3 batteries are installed. A detailed discussion of your needs is recommended for an accurate assessment.
Yes, it is possible, but it requires careful planning and significant investment. A true off-grid system needs a large enough solar array and sufficient battery storage to sustain your lifestyle. Cost and having an alternative energy source for when solar charging isn't possible are key considerations.
No. EGbatt focuses on building long-term relationships with business partners like battery distributors, solar equipment dealers, and installation contractors worldwide, not direct sales to end consumers.
EGBATT Battery Compatibility with Inverters
Perfect Matching with Mainstream Hybrid and On-grid Inverters
EGBATT lithium battery systems are tested for seamless compatibility with a wide range of inverter brands across global markets. Whether for residential, commercial, or utility-scale applications, our batteries support multiple communication protocols (CAN/RS485) and work with both low-voltage (40–60V) and high-voltage (100–1500V) inverter platforms.
- Low-Voltage System Compatibility (40–60V)
Low-voltage systems typically operate in the 48V-60V range and are widely used in home off/grid-connected solar systems. EGBATT lithium batteries offer seamless compatibility with a wide range of leading inverter brands in this range, including:
Deye, Growatt, GoodWe, ZZPower, Solis, Sinexcel, SRNE, Schneider Electric, Megarevo, AISWEI, SMA, Luxpower, Victron Energy, Afore, Hoymiles, INVT, Sofar, OutBack Power, SolaX Power, tbbpower, Sacolar, Sunsynk, Sosen, SMD Solar, Must, SOROTEC, Sunman, Voltronic Power, SAJ, and more. - High-Voltage System Compatibility (100–1500V)
High-voltage energy storage systems generally operate in the voltage range of 150V-1000V and are adapted to high-power inverters for commercial and industrial energy storage systems (80kWh-200kWh and above). EGBATT high-voltage lithium battery systems are fully compatible with leading inverter brands within this range, including:
Sol-Ark, INVT, Sinexcel, Luxpower, SClinTeg, Shanghai Nenergy, Deye, Growatt, Xina Electric, Hoymiles, Sunsynk, Hopewind, Solis, SOSEN, Megarevo, EcoCod, GoodWe, Sunways, Jingshi Technology, Kehua Tech, AISWEI, KOYOE, Sermatec, Afore, and more.
We offer integration support and testing for most mainstream hybrid and on-grid inverters. Contact EGBATT for compatibility details and custom solutions.
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