Dr.Prepare 12V 100Ah Lithium Iron Phosphate (LiFePO4) Battery

Important Safety Instructions

Please read through all the labels on the battery and this user guide before the first use.

Installation

• Do not install the battery in a location that may be flooded.
• Do not short the battery terminals.
• Do not connect batteries in series.
• Do not reverse the polarity connection.
• Do not expose the battery to fire, extreme heat conditions, or close to any heat sources.
• Secure the battery in place to avoid any violent shaking when installing it in your vehicle.
• Do not drop the battery from a high altitude.
• Do not strike fiercely or penetrate the battery.

Operation

• Use certified and compatible battery chargers to charge the battery.
• Do not disassemble the battery.

Specifications

General

Battery Label Details:

• Type: LiFePO4 100Ah Lithium Iron Phosphate Deep Cycle Battery
• Model: DBT12100LFP-SA
• Capacity: 12.8V/100Ah/1280Wh
• Charging Voltage: 14.6V
• Max Discharging Current: 100A
• Max Charging Current: 50A
• Charging Temperature Range: 32°F~122°F (0℃~50℃)
• Operation Temperature (Discharging): 14°F~140°F (-10℃~60℃)
• Storage Temperature Range: 32°F~95°F (0℃~35℃)
• Size: 13.74 x 8.37 x 6.95 inches (349 x 212.7 x 176.5 mm)
• Net Weight: 27.56 lbs / 12.5 kg
• Certifications: UN38.3
• Origin: Made in China
• Warnings: DO NOT SHORT CIRCUIT THE BATTERY ❗, DO NOT DISASSEMBLE THE BATTERY ❗, DO NOT INCINERATE THE BATTERY ❗, REVERSE CONNECTIONS FROM CHARGER TO BATTERY ❗, RECHARGE THE BATTERY EVERY 6 MONTHS ❗.

Battery Image Description: A 12V 100Ah Lithium Iron Phosphate (LiFePO4) battery with model number DBT12100LFP-SA. It features clear terminal posts and a label displaying specifications and warnings.

Connecting Batteries in Parallel

1. Please make sure all batteries that are connected meet the following criteria:
   • Batteries have the same capacity (Ah) and are the same type (LiFePO4).
   • As the built-in battery management system (BMS) may vary between brands, it is advised to choose batteries from the same brand for connection.
2. For optimal performance, we kindly advise you to follow the requirements listed below:
   • Fully charge all ready-to connect batteries.
   • All battery interconnect cables should be the same wire gauge (AWG) and length, and come from the same brand. Otherwise, the impedance will be inconsistent, resulting in unbalanced charge and discharge performance.
   • Connect your batteries one by one in parallel. Secure all cable connections between the cable lugs and terminals. Please do not connect batteries in series.
3. When determining the cable size (AWG) for your system, there are two factors to consider:
   • The size of the electrical load you want to power.
   • The distance between the electrical load and your batteries.

Cables for Controller to Battery

Cables for Inverter to Battery

Battery Management

How to Properly Store Batteries

We recommend bringing your battery to a 100% state of charge, or at least a 30%-50% state of charge. Then disconnect the battery from any load by removing the terminal cables. Highly recommended charging the battery every 6 months when not in use to prevent over-discharge.

How to Charge the Battery

• The optimal charging current for a single lithium battery is around 20 amps, while the maximum charging current is 50 amps. The amount of charging current is determined by your DC-DC charger, charge controller, or other compatible lithium battery charger you use.
• When the battery is fully discharged at a continuous 100A, we do NOT recommend re-charging it at 50A immediately, which will trigger high-temperature charging protection.

Performance Charts

Discharge Curve at Different Temperatures (0.5C)

This chart displays the battery voltage discharge curves at various temperatures when discharged at a 0.5C rate. It shows that lower temperatures and higher discharge rates lead to a more significant drop in voltage and reduced capacity.

• 122°F / 50°C
• 104°F / 40°C
• 86°F / 30°C
• 68°F / 20°C
• 50°F / 10°C
• 32°F / 0°C
• 14°F / -10°C

Charging Performance (0.5C, 77°F/25°C)

This chart illustrates the charging voltage and charging current as a function of charging capacity at a 0.5C rate and 77°F (25°C). It shows the typical constant current (CC) and constant voltage (CV) charging stages for LiFePO4 batteries.

Cycle Life Versus Depth of Discharge (0.5C, 77°F/25°C)

This graph demonstrates the relationship between the number of charge/discharge cycles and the depth of discharge (DOD) at a 0.5C rate and 77°F (25°C). It indicates that shallower discharges result in a significantly longer cycle life.

Warranty and Support

Warranty

• Dr.Prepare LiFePO4 batteries are covered by a 5-year limited warranty from the original purchase date.
• Any damage caused by human error, including improper installation, operation, or storage, is not covered by this warranty.
• If you encounter any issues during usage, feel free to contact Dr.Prepare support at support@drprepare.com.
• Dr.Prepare provides after-sales service for products sold directly by Dr.Prepare or by retailers and distributors authorized by Dr.Prepare. If you purchased your unit through other channels, please contact your seller for more information about the return and warranty.

Support Information

• For assistance, please send an email to support@drprepare.com.
• To explore more products, visit the website drprepare.com.