ExpertPower EP12200 12V 200Ah Lithium LiFePO4 Deep Cycle Battery
ExpertPower EP12200 is a large, sturdy, powerful, and surprisingly lightweight Lithium Iron Phosphate (LiFePO4) deep cycle battery, designed to endure a large number of charging and discharging cycles, even down to 100% DoD.
As such, ExpertPower EP12200 is suitable as a trolling motor battery, off-the-grid battery, for electric motors and other vehicles, as emergency battery, etc. Although its initial price is higher than the price of similar 12V 200Ah AGM batteries, in the long run, ExpertPower EP12200 actually saves the money ...
Published: January 16, 2021.
ExpertPower EP12200 Features and Specifications
ExpertPower EP12200 battery features physical dimensions of (L x W x H) 20.6 x 9.5 x 8.6 (8.8 with terminals) inches (~52.3 x 24.2 x 21.9/22.4 cm) and although it is very often classified as BCI Group 4D battery, it is actually BCI Group 6D battery:
- BCI Group 4D: 20.75 x 8.75 x 9.875 inches (52.7 x 22.2 x 25.0 cm),
- BCI Group 6D: 20.75 x 10 x 10.25 inches (52.7 x 25.4 x 26.0),
- BCI Group 8D: 20.75 x 11.125 x 9.875 inches (52.7 x 28.3 x 25.0 mm).
Whenever looking for a new battery, not just ExpertPower EP12200, always check the actual size of the battery compartment and the actual size of the battery - better safe than sorry.
Despite its size, ExpertPower EP12200 weighs only 48.3 pounds (~21.9 kg), which is surprisingly lightweight for the battery of this size and capacity, thanks to the LiFePO4 technology.
ExpertPower EP12200 comes with the built-in Battery Management System (BMS) that protects the battery from unwanted events.
The nominal voltage of the ExpertPower EP12200 battery is 12.8 volts and the nominal capacity is ≥200Ah when the battery is discharged at 0.2C rate (40 Amps) at 77°F (25°C) - that also means that the Reserve Capacity of the ExpertPower EP12200 battery is 480+ minutes (8+ hours).
ExpertPower EP12200 battery comes with M8 battery terminals, ensuring firm contact between battery terminals and battery cables. Also, since there is no lead-acid and other similar chemicals present, the corrosion of the terminals is reduced by much.
The battery also comes with a pair of handles, allowing two adults to easily carry the battery around.
The built-in BMS protects the battery from various unwanted events:
- maximum continuous charge current is 50 Amps,
- maximum continuous discharge current is 150 Amps,
- maximum 3 seconds discharge current is 200 Amps,
- discharge temperature is from -4°F to 140°F (-20°C to 60°C),
- charge temperature is from 32°F to 140°F (0°C - 60°C),
- over-voltage protection 14.8 volts,
- under-voltage protection 10.8 volts,
- short circuit protection.
ExpertPower EP12200 battery comes with a full set of internal sensors, measuring various parameters of the battery, allowing the BMS to act according to the battery condition/use.
Note: ExpertPower EP12200 battery is a rather safe LiFePO4 battery, but when it arrives, be sure to read Owner's Guide/manual thoroughly.
During discharge down to 100% DoD, ExpertPower EP12200 battery features output voltage above 12V at least 95% of the time, which is an excellent result even for a lithium battery.
Such high voltage, allows the battery to store and release a large amount of energy, 2560 Wh when fully charged.
When the ExpertPower EP12200 battery is used in cycle applications and discharged down to 100% DoD, it can withstand up to 2500 charging/discharging cycles (@0.2C, 77°F, 25°C). If the battery is not pushed to 100% DoD, it can withstand (@0.2C, 77°F, 25°C):
- 100% DoD: 2500 cycles,
- 80% DoD: 3600 cycles,
- 50% DoD: 7000 cycles.
Such number of charging/discharging cycles is 8-10x higher than the charging/discharging cycles of premium AGM batteries and 10-15x higher than the charging/discharging cycles of general-purpose, deep cycle AGM batteries.
Another advantage of the ExpertPower EP12200 battery is a very low self-discharge rate, which allows the battery to be stored up to a year at room temperature (@77°F, 25°C).
How to Charge ExpertPower EP12200 Battery
Lithium Iron Phosphate (LiFePO4) batteries should NOT be charged using smart AGM battery chargers that support charging wet/flooded, AGM and Gel-Cell lead-acid batteries, UNLESS such battery chargers feature dedicated lithium battery charging mode.
Well, ExpertPower EP12200 battery features a charging voltage of 14.4V ± 0.2 volts and a standby voltage of 13.8 volts. When analyzing lithium batteries, AGM battery chargers may 'conclude' that the battery is fully charged, while the battery is actually almost empty.
Also, if for some reason, the AGM battery charger 'concludes' that the battery requires desulphation or even deep-discharge recovery, such AGM charging modes can destroy Battery Management Systems of various lithium batteries, not just the BMS of the ExpertPower EP12200 battery.
For short, ExpertPower EP12200 and other similar lithium batteries should be charged using dedicated lithium battery chargers or with a smart AGM battery charger that comes with the dedicated lithium battery charging mode - such battery chargers charge lithium battery using 2-stage constant current/constant voltage charge algorithm and protect the batteries from unwanted events.
There are a number of suitable lithium battery chargers on the market, two of them are:
ExpertPower EPC1220 12V 20A Smart Charger
ExpertPower EPC1220 is a dedicated Lithium Iron Phosphate (LiFePO4) battery charger with a maximum charging current of 20 Amps.
ExpertPower EPC1220 is a reliable CC/CV lithium battery charger, designed by ExpertPower to charge not only their, but also all other lithium batteries with a capacity of 40-50Ah and more.
ExpertPower EPC1220 features physical dimensions of 6.3 x 4.1 x 2.4 inches (16 x 10.4 x 6 cm) and it weighs 2.65 pounds (~1.2 kg).
For example, if the ExpertPower EP12200 is discharged down to 80% DoD, ExpertPower EPC1220 is able to fully recharge the battery in slightly more than 8 hours, without stressing the battery with too strong current or anything similar.
For more reviews and recommendations, feel free to check ExpertPower EPC1220 Smart Lithium Battery Charger Amazon link (link opens in the new window).
NOCO Genius G26000 26-Amp 12V/24V Smart Battery Charger With JumpCharge
NOCO Genius G26000 26-Amp 12V/24V Smart Battery Charger With JumpCharge is a very versatile battery charger, which comes with several charging modes, including:
- 12V battery (26 Amps): lead-acid, lithium,
- 16V battery (19.5 Amps): lead-acid, lithium,
- 24V battery (13 Amps): lead-acid,
- 13.6V (5 Amps): power supply mode,
- 12V (1.5 Amps): repair mode,
- 12V (30 Amps, 5 minutes): JumpCharge.
NOCO Genius G26000 also comes with a broad range of other features, like temperature compensation, safety features, advanced battery diagnostics, etc.
Note: JumpCharge mode charges 'almost dead' battery with 30 Amps for 5 minutes charging it with ~2.5 Ah - again, it is not enough to charge any 'serious' battery, but thanks to the 'surface charge' it gives the battery an opportunity to start the engine ones, after which onboard battery charger (usually an alternator combined with control electronics) charges the battery.
Physical dimensions are (L x W x H) 12.1 x 5.7 x 3.2 inches (~30.7 x 14.5 x 8.1 cm) and it weighs 5.09 pounds (~2.31 kg).
For example, if the ExpertPower EP12200 is discharged down to 80% DoD, NOCO Genius G26000 is able to fully recharge the battery in slightly more than 6 hours.
For most up-to-date prices and offers, feel free to check NOCO Genius G26000 Amazon link (link opens in the new window).
ExpertPower EP12200 Battery vs ExpertPower EXP122000 (EXP200) Battery
ExpertPower EP12200 and ExpertPower EXP122000 (EXP200) batteries are two very similar batteries in terms of nominal voltage, capacity, and dimensions and that is where their similarities end.
ExpertPower EP12200 feature dimensions of 20.6 x 9.5 x 8.6 inches, while ExpertPower EXP122000 (EXP200) feature dimensions of 20.59 x 9.44 x 8.62 inches - both batteries are labeled as 4D batteries, but they are actually 6D batteries.
Voltage and Capacity
ExpertPower EP12200 features a nominal voltage of 12.8 volts and a 5h capacity of 200Ah, while ExpertPower EXP122000 (EXP200) features a nominal voltage of 12.8 volts, 10h capacity of 200Ah, and 20h capacity of 220 Ah.
However, as the ExpertPower EXP122000 (EXP200) battery is being discharged, its voltage much quicker drops below 12 volts. Also, when being discharged quickly, for example, under 5 hours, capacity loss is much stronger than the capacity loss of the ExpertPower EP12200.
ExpertPower EP12200 battery weighs 48.3 pounds while ExpertPower EXP122000 (EXP200) weighs 132.3 lbs, almost 3x more!
While ExpertPower EP12200 can withstand (@0.2C, 77°F, 25°C) - 100% DoD: 2500 cycles, 80% DoD: 3600 cycles, 50% DoD: 7000 cycles, etc., ExpertPower EXP12200 (EXP200) can withstand ~500 cycles down to 50% DoD, which is 14 times less!
On the other hand, ExpertPower EXP122000 (EXP200) costs several times less than the ExpertPower EP12200 battery.
If You are looking for a lightweight battery that will cycle a lot, go for ExpertPower EP12200 lithium battery, despite its price.
On the other hand, if you are looking for a standby deep cycle battery that will not cycle thousands of times and you don't mind the additional weight, go for AGM ExpertPower EXP122000 (EXP200) battery.
For more reviews and recommendations, feel free to check the ExpertPower EXP122000 12V 200 Ah AGM Deep Cycle Battery Amazon link (link opens in the new window).
ExpertPower EP12200 Battery as an Inverter Battery
ExpertPower EP12200 battery is often used in off-the-grid situations for powering various devices and appliances.
As an inverter battery, it can provide a maximum of ~1500 Watts continuously and ~2000 surge watts (for up to 3 seconds), using the power inverter with 80% efficiency.
Such power levels may be sustained for more than an hour. However, if the power levels are lower, the runtime may be much longer.
For example, if the ExpertPower EP12200 battery is used to power a 500W power inverter with 80% efficiency, then the battery is able to power such an inverter for up to 4 hours.
ExpertPower EP12200 Battery as Trolling Motor Battery
ExpertPower EP12200 can be used as an excellent, lightweight, high-capacity trolling motor battery.
ExpertPower EP12200 actual capacity is 200Ah when the battery is being discharged at 0.2C (40 Amps) rate @77°F (25°C).
Most electric trolling motors feature a maximum discharge current of 40-60 Amps, and ExpertPower EP12200 may power such devices up to 3-5 hours.
However, if You are pushing your electric trolling motor at full throttle almost all the time, then your trolling motor is underpowered for your vessel.
In many situations, trolling motors are run at 20-30 Amps (on average) and ExpertPower EP12200 may power such units up to 7-10 hours, constantly!
If the ExpertPower EP12200 is being recharged during the night and discharged during the day, then the battery can last for many years.
Note: ExpertPower EP12200 comes with a 1-year warranty and an anticipated 10-year lifetime.
Long Story Short: ExpertPower EP12200 battery is a high-capacity, ultra-light lithium deep-cycle battery, suitable for various cycling applications like electric vehicles, electric trolling motors, as off-the-grid battery, in various emergencies and similar.
Although it costs initially more than similar AGM/Gel-cell batteries, in the long run, ExpertPower EP12200 actually saves the money thanks to its lighter weight and a very large number of charging/discharging cycles.
For more reviews and recommendations, feel free to check ExpertPower EP12200 12V 200Ah Lithium LiFePO4 Deep Cycle Battery Amazon link (link opens in the new window).