LiFePO4 marine batteries manufacturer, factory and OEM in China
As a factory supplier, Redway Power specialises in LiFePO4 marine batteries crafted for marine applications. Rechargeable lithium iron phosphate packs for house banks, trolling motors and dual-purpose marine duty.
- House, trolling and dual-purpose
- 12V and 24V marine banks
- BCI-size drop-ins
Wholesale LiFePO4 marine batteries
The same 12V/24V cell platform as the RV list, specified for boats: house loads, trolling motors and dual-purpose banks.
12V 50Ah marine battery
12V 50Ah lithium for small marine accessory loads.
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12V 100Ah marine battery (Group 24)
12V 100Ah marine/RV lithium, Group 24.
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12V 150Ah marine battery (Group 31)
12V 150Ah marine/RV lithium, Group 31.
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12V 200Ah marine battery
12V 200Ah marine lithium, UL/CE class.
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12V 300Ah marine battery
12V 300Ah marine house bank.
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12V 400Ah marine battery
12V 400Ah marine lithium — ask sales for the current SKU.
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24V 100Ah marine battery
24V 100Ah LiFePO4 for 24V boats.
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24V 200Ah marine battery
24V 200Ah deep-cycle marine lithium.
View productHouse, trolling and dual-purpose marine banks
Redway Power is a factory supplier of wholesale LiFePO4 marine batteries engineered for marine applications.
General marine batteries
12V and 24V LiFePO4 house power for cruisers and workboats.
Lithium marine batteries
Purpose-built lithium iron phosphate marine packs from the factory.
Deep cycle marine batteries
Deep-cycle LiFePO4 for overnight house loads.
Trolling motor batteries
High-current LiFePO4 for electric trolling motors.
AGM marine replacement
Drop-in LiFePO4 replacements for common AGM marine group sizes.
RV and marine batteries
Shared 12V/24V platform when a customer runs both coaches and boats.
What buyers usually ask
House bank or starting?
These pages are deep-cycle and dual-purpose marine LiFePO4. Send CCA/MCA if you also need a dedicated starting battery.
Saltwater duty?
Tell us enclosure, terminals and whether the pack sits in a wet locker. We quote seals and coatings with the sample.
Three things that make a useful OEM enquiry
Redway accepts OEM, ODM and SKD orders, including logo or brand-name printing on the pack.
Specification
Please let us know the operating voltage requirements; and if any additional functions are needed, such as 10 second discharge and 10 second charge.
Quantity
A minimum order quantity (MOQ) is not required. However, a realistic annual volume will help you get a better price.
Application
Our engineers can provide you with more suggestions under your budget if you let us know your application or details about your project.
Certified for transport, safety and quality
Redway lithium batteries are UN 38.3 certified and built from Grade-A cells. Selected models also hold UL 1973, UL 2580 and IEC 62133. ISO 9001:2015 and ISO 14001:2015 cover the quality and environmental systems used for industrial models. OEM clients can request extra laboratory services with the quotation.
A lithium battery OEM factory, not a trading desk
Grade-A LiFePO4 cells
Packs are built from Grade-A cells from suppliers such as CATL and EVE, designed for high performance, durability and long cycle life.
Lead-acid replacement & custom packs
Drop-in lithium iron phosphate replacements for lead-acid batteries, plus custom battery packs designed around your equipment.
Modern manufacturing equipment
Batteries are produced on up-to-date lines with welding, assembly, aging and testing equipment in our own factories.
Support from enquiry to delivery
One team handles your enquiry, samples, production and after-sales, backed by a battery replacement warranty.
Direct OEM/ODM supply worldwide
Production capacity and direct delivery to customers around the world, for private-label and engineered-to-order products.
Responsible manufacturing
ISO 14001:2015 environmental management and a commitment to social responsibility across the group.
Our experts are a click or a call away. Get battery advice from people in China who build the packs.
Marine battery guides and answers
Choosing the bank, wiring it, charging it from every source on board, and storing it well.
This is the guide for marine batteries. It collects the two decisions that matter: which bank the boat needs and how to install and run it.
Choose the bank
Separate house, trolling and starting duty
- What Is the Best Trolling Motor Battery for Your Needs
- How to Choose the Best 24-Volt Lithium Marine Battery for Your Vessel
- How to Choose the Best Marine, Lithium and Trolling Motor Batteries for China-Based OEM/Factory Buyers
- How to Choose the Best Trolling Motor Battery for China OEM Needs
- What Is The TM27-165 Group 27 12V Marine Battery
- How To Pick The Best Trolling Motor Battery For Your Boat
- What Is A Deep Cycle Group 27M Marine Battery
- Why Choose A Deep Cycle Marine And Boat Battery
Voltage, amp-hours and runtime
- How can Redway Battery deliver 36V LiFePO4 solutions for marine applications
- How reliable are Vatrer 12V Lithium Batteries for RVs, Vans, Solar, and Marine
- What Is the 12V 100Ah LiFePO4 Marine Solar Battery
- What Is The TM27-165 Group 27 12V Marine Battery
- What Makes a 36V Lithium-Ion Marine Battery Ideal for Boating
- What Makes a 12V Marine Battery Essential for Boating
- Is 36V Lithium Ideal For Trolling Motors Or Carts
- What Is a 12V Deep Cycle Marine Battery and How Does It Work
Install and run it
Charging from every source on board
- How To Choose The Right Charger For Marine Batteries
- What Are the Best 4 Bank Marine Battery Chargers for Marine Use
- How Does a Marine 2 Bank Battery Charger Work
- What Is the Best Trickle Charger for Marine Batteries
- What Are the Best Marine Battery Chargers at Walmart
- Can You Charge a 21700 Battery with a 26650 Battery Charger
Wiring, installation and storage
- How Do You Wire Your Boat Batteries Correctly
- How To Winterize And Store Boat Batteries
- How Does a Marine Battery Gauge Improve Boating Safety and Efficiency
- How to Choose and Maintain West Marine Batteries for Optimal Performance
- How Does a Marine Battery Switch Improve Boat Safety and Performance
- How to Install a Marine Battery Switch: A Step-by-Step Guide
Marine battery questions
The questions that come before an order.
Do I need a separate starting battery on a boat?
On anything with an engine and a trolling motor, yes. Starting needs short high-current bursts; the house and trolling loads want deep cycling. One dual-purpose battery is a compromise for small boats only.
How many amp-hours does a trolling motor need?
Divide the actual draw at your usual speed setting into the amp-hours you want available, then keep a reserve. Lithium delivers the full curve, so the last hour does not feel slower than the first.
Can I charge a lithium marine battery from the alternator?
With a lithium-aware regulator or a DC-DC charger, yes. A standard alternator regulator will overcharge and overheat the pack; this is the most common marine conversion mistake.
How do I store a marine battery over winter?
Charge to roughly half, disconnect the loads, and keep it above freezing where possible. Leaving a lithium pack at 0% for months is what shortens its life.
Is lithium safe on a boat?
With a BMS, correct fusing and sealed terminals, it is the safer chemistry — no acid, no hydrogen during charging. The realistic risks are DC arc at the connection and mechanical damage, both managed by installation.
Where to go next
All Redway guides — the index of every topic on this site.
RV batteries — the same house-bank thinking with more appliances.
Forklift batteries — industrial duty cycles.
OEM & ODM — private-label packs for boat builders.
Send the boat details
Give us the loads or the motor, the charging sources and a photo of the battery bay.