Lithium Trolling Motor Batteries

• ​​Live battery monitoring via phone app- relax as you'll always know how much battery power you have
• Very high continuous power draw (150 amps continuous, up to 300 amps for under ten seconds, connect 2 in parallel for double the cranking amps, 300 continuous, 600 for ten seconds, add three, four... etc) so can easily start fishing boat engines - one battery can run your whole boat
• Run power pole, trolling motor, fish finder, GPS, live well plus start engine (highest continuous draw) and charge phone
• Wire 2 or 3 in series to get 24v or 36v trolling battery- Single 24v Lithium Battery available
• Ideal for fishing all day, lightweight and powerful (depending on trolling motor speed/battery size)
• Over two thousand cycles = a lifetime of happy fishing- Bundle in portable solar panel kit to charge the batteries​
  

Call any time 773-965-2546. Read below on how these lithium batteries compare to other lithium batteries and AGM, lead acid.

We have customers who use a single lithium trolling motor battery for their fishing boats. It powers everything including starting the engine. Depending on your usage, it is normal to be able to fish all day, then start your motor and head home. Great for bass boats, skiffs, flats boats, jon boats. Lightweight so it's easy to take out and recharge.

Or pair with a portable solar panel and charge the battery while you're not on the boat.Callany time for ideas or to talk through your setup.

LiFePO4 (lithium iron phosphate) is a lithium-ion battery technology that is safe, powerful and plug compatible with most lead acid battery charging systems. This battery technology offers many advantages over lead acid and AGM technology including high capacity storage, delivery of consistently high power, longer cycle life, less weight, longer shelf life and rapid efficient charging. 

LiFePO4 batteries are the safest type of lithium batteries as they will not overheat, and even if punctured they will not catch fire. The cathode material in LiFePO4 batteries is not hazardous, and thus poses no negative health hazards or environmental hazards.CMPowerLiFePO4 batteries are plug compatible with lead acid batteries and will accept a charge from most lead acid configured chargers.  The charge voltage and amperage should be within the range specified for the LiFePO4 batteries.

A CMPower(Custom Marine Products) Lithium Trolling Motor battery has two primary components, theLiFePO cellsand theBattery Management System (BMS).  Both are housed in a sealed battery case.  The quality of each component is key to the longevity and performance of the battery.  LiFePO cells are wired in parallel to form a module producing 3.2 volts.  Four of these units are connected in series to form a rated 12.8 volt LiFePO4 battery; eight for a 25.6 volt battery.  The temperature, charge and discharge of each cell is monitored and managed by the BMS, a computer of sorts built into each battery.  In addition to cell monitoring and management, the BMS will prevent over discharging of cells by disconnecting the load and will prevent cell over charging by reducing charge current or stopping the charge process.   The BMS will also shut down the system if the battery temperature is out of range.

Weight/power ratio - A typical 100 Ah LiFePO4 battery weighs about 31 pounds.  A comparable lead acid battery is over twice that.  Because LiFePO4 batteries can be safely be drawn down 95% vs 50%-60% for lead acid, fewer batteries are required to achieve the same power.  Lightweight combined with usable power capacity means battery bank weight can be cut by more than half using LiFePO4 lithium batteries.  Also, LiFePo4 batteries will occupy up to 40% less space than equivalent lead acid batteries. They are ideal for powering trolling motors. And ideal for taking in and out of the boat to recharge, much easier to move around than lead acid batteries. Also consider a portable solar panel to connect and charge your battery between and during fishing trips.

​For example, 3 group 31 110 amp hour lead acid batteries weighing a total of 200 pounds can be replaced by 2 group 31 size 100 amp hour LiFePO4 batteries weighing a total of 62 pounds.  Both configurations have roughly the same power capacity because the lead acid can be safely drawn down 50% (330 amps @50% = 165 amps) and the Lithium battery can be safely drawn down 95% (200 amps @ 95% = 190 amps).  Also, the lead acid will endure 300-500 cycles and the LiFePO4 over 2,000 cycles.

Safety - Lithium batteries have a reputation for catching fire.  This is not so with LiFePO4, a very different technology.  The built-in Battery Management System (BMS) monitors the state of charge of each cell group and manages the temperature, charge and discharge rates.  The BMS will prevent over-charging and over-discharging by disconnecting from the source.  There are no toxic chemicals or gases as in many types of lead acid batteries.  The batteries can be mounted in any direction; bottom or side.

Compatibility - While the optimal charging parameters vary between LiFePO4, AGM and lead acid battery technology, the BMS built into CMPower LiFePO4 batteries compensates for this.  Thus, our LiFePO4 trolling motor batteries are compatible with most lead acid battery charging systems. 

Bluetooth Battery Monitoring -CMPower LiFePO4 batteries are equipped with Bluetooth for monitoring battery State of Charge (SOC) through a Smartphone or tablet app - ideal for trolling motors and fishing boats in general. This is important because unlike lead acid batteries, LiFePO4 lithium batteries maintain a constant voltage between 13 and 13.4 volts so a voltmeter is not an accurate indicator of SOC.   A built in Bluetooth capability enables real time monitoring of each battery through an app on either an Android or IOS smartphone or tablet.  The app displays the state of charge (SOC) of the battery, the amp draw and voltage level, the temperature, the time to full charge and the number of charge/discharge cycles.  This capability is nearly equivalent to having a built in battery bank monitoring system like a Link 2000. No worries about being stuck out on the lake unable to start your engine. And knowledge all day long as you fish about how much battery life you have left.

Winter Operation and Storage -CMPower LiFePO4 lithium batteries can be stored in temperatures from -10°F to +104°F (-25°C to +40°C).  It is recommended they not be heavily charged and discharged at temperatures below -4°F (-20°C) .   It is recommended that the negative terminals be disconnected during winter or long term storage so there is no chance of draining the batteries while in storage.  LiFePO4 batteries should be recharged at a minimum every 6 months while in storage.

Long Term Investment - Keep Them for Life - Because the number of charge cycles of well cared for CMPower Lithium batteries is in excess of 2,000 they can be a long term  investment you can take with you from boat to boat or boat to camper.  Also, because the batteries have a built in cycle recording system, the batteries can be resold at a value based on their number of charge cycles.  For example: The owner of a sailboat purchased three LiFePO4 batteries two years ago; two for house and one for engine starting.  After two years of cruising the starting battery had 2 charge cycles and the house batteries, wired in parallel, had only 20 charge cycles as shown on the Bluetooth APP.  These batteries are like new and can be taken to their new boat or sold as quality longlife used batteries.  In fact, if and when CMP LiFePO4 batteries become available from our customers, we will post them on our website for purchase.

Cost -CMPower Lithium trolling motor batteries are 2 to 4 times the cost of comparable lead acid or AGM type batteries.  Cost justification is often based on convenience, performance and longevity.  Factors to consider in evaluating cost include the number of charge cycles, power to weight ratio, charge and discharge efficiency and compatibility.  Over the long term, these batteries are often considerably more cost effective than lead acid or AGM batteries.

Bottom line CMPowerLithium marine batteries have the following advantages:

1. lighter than lead acid - lightweight, generally less than half the weight of lead acid
2. can be drawn down 90% vs 50% - more useable capacity
3. hold steady voltage through 95% discharge - constant power and voltage
4. generally plug compatible with lead acid chargers - drop-in replacement
5. charge more quickly and efficiently than lead acid batteries - excellent for solar systems
6. have up to 10 times more charge cycles than lead acid and AGM batteries - could last a lifetime
7. nontoxic and safe, very low fire risk - no toxic gases emitted, many built-in protections
8. low self-discharge - easy winter storage, long shelf life
9. Bluetooth equipped to monitor battery State of Charge with free app - built in battery monitor​
10. cost effective in the long run​

They are more expensive than lead acid however their advantages and longevity often outweigh the additional initial investment.