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Battery and Equipment Exchange

CMPower LiFePO4 batteries are designed to last 2,000-4,000 charging cycles if properly cared for.  Thus, if a battery has 50-100 cycles, it is at the beginning of its life.  We have created this page so battery owners who no longer need their batteries because they are selling their boat or moving to a different boat can sell their used LiFePO4 batteries.  This can be a win-win for the battery owner and the buyer.  Custom Marine Products (CMP) does not warranty or take no responsibility for the purchase transaction or the condition of the battery unless it is being sold by CMP.  The transaction is between the battery owner and the buyer.
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It is important to note that the CMPower Battery Bluetooth app provides information about the health of the battery and the number of charge cycles it has logged so the buyer has a pretty good idea about the condition of the battery.  This is what makes the Battery Exchange concept viable.

If you are interested in selling your CMPower battery, simply email us the information listed below and we will post your battery or solar equipment listing.

CMPower LiFePO4 Batteries

Marine Sport Series LiFePO4 Refurbished Batteries

Some of our Marine Sport Series marine batteries were in need of a firmware update.  This update involved drilling a hole in the top of the battery, connecting a probe to the circuit board, updating the firmware and sealing the hole.  These are brand new batteries with only one test charge cycle.  The CMP battery warranty applies to these batteries.  A unique feature of these batteries is a buzzer alarm that sounds when the battery is at 20% and 15% State of Charge.  The alarm can be turned on or off with a button on top of the battery.  Below are the specifications and pricing of these brand new refurbished batteries.  Contact CMP at 248 705 8337 for more information or to purchase these batteries.

Customer Batteries for Sale

125 Ah LiFePO4 Batteries for sale

Qty 2   CMP20512-BM5A  125 Ah Batteries, 150A continuous draw, Group 31,  Only 23 and 26 charge cycles, excellent condition.

Reason for sale:  Upgrading to 10 Ah batteries
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Contact Walter for pricing.
Walter Caldwell
Phone:  281-433-4645
Email:   
[email protected]


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CMPower Solar System Equipment

There are no solar system related products on the exchange at this time.


Efficiently Powering Your Vessel/Van. Call/email/chat any time, we're happy to help you work through designing your solar system.
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  • Home
  • Marine Solar Panels
    • All Marine Solar Panels
    • Flexible Marine Solar Panels >
      • Flexible Panel Specifications
      • Flexible Panel Bimini Solar System Kits
      • Flexible Solar Panel Mounting Kits
    • Semi-Rigid Walk On Marine Solar Panels >
      • Semi-Rigid Panel Specifications
      • Semi-rigid Solar System Kits
      • Semi-rigid Panel Mounting System
    • Rigid Marine Solar Panels >
      • Rigid Panel Specifications
      • Rigid Solar System Kits
      • Mounting System - Top Of Pole
    • Van Solar Panels
    • Stern Rail Mounted Solar Panels
    • Discounted Solar Panels
    • Portable Solar Panels
    • Shop Our Store
  • Products
    • Marine Solar Panels
    • Lithium Batteries >
      • LiFePO4 Lithium Batteries
      • Portable Power Stations
    • Solar Controllers >
      • Victron MPPT Controllers
      • EP Solar Controllers >
        • DuoRacer Dual Output Series
        • Xtra-N Series
        • MPPT Tracer Series
        • PWM Duo Dual Output Controller
    • Accessories >
      • Wire & MC4 Connectors
      • Outboard Motor Lifting Crane >
        • Lift Crane Features and Specs
      • Solar Water Heating System For Boats
    • Victron Products >
      • Victron MPPT Controllers
      • Victron Electrical Components
      • Inverters
      • Victron Batteries
    • Shop Our Store
  • Reviews
    • Reviews
    • Gallery of Installations
  • Handy Info
    • Learn About Solar
    • System Design
    • Solar System Installation Pointers
    • Manuals & Information
  • Support
    • FAQ
    • Troubleshooting
    • Contact Us
    • Solar System Installers
    • Battery Exchange Plus
    • Handy Products We Don't Carry
    • Freight Forwarders for International Shipping
    • About us
    • Call (248)453-2433
    • Return Policy
    • Shipping Rates
  • Blog