DBT12100LFP-S48SC-US 12V 100Ah LITHIUM IRON PHOSPHATE User Manual

DBT12100LFP-S48SC-US 12V 100Ah LITHIUM IRON PHOSPHATE

This user manual offers a brief walkthrough of the unit’s features.
Please keep the user manual in hand for future reference.
Still need help? Feel free to send us an email at support@drprepare.com

IMPORTANT SAFETY INSTRUCTIONS

• Please read through all the labels on the battery and this user guide before the first use.
• When connecting batteries in series or in parallel, read all the precautions about How to Connect Battery first, or you may damage the batteries.
• Keep the battery away from rain, splashes, and any wet locations.
• DO NOT short circuit the battery.
• DO NOT reverse polarity connection.
• DO NOT expose the battery to fire, extreme heat conditions, or close to any heat sources.
• DO NOT dismantle or modify the battery yourself.
• DO NOT drop the battery from a high altitude.
• DO NOT strike fiercely or penetrate the battery.
• Secure the battery in place to avoid any violent shaking when installing it in your vehicle.
• Please use a certified compatible LFP battery charger to charge the battery. The recommended optimal charging current is around 20 amps, while the maximum is 50 amps. Over-amped charging current will shorten the battery’s lifespan.

SPECIFICATIONS

HOW TO SET THE CONTROLLER

• After connecting the battery to a Li-compatible controller, you need to set the Battery Type to Li.
• If your controller does not provide the Li battery type option, you can set the parameter of Boost, Absorption, and Float to 14.2V x N.
  Then, set the over-discharge parameter to 11.1V x N.
  Note:
  (x N)* : When it comes to a 24V(N=2) or 48V(N=4) system, the voltage should multiply by the number of series batteries.

TIPS FOR BETTER PERFORMANCE

How to Connect Battery

1. Please make sure all batteries that are connected meet the following criteria:

   • Batteries have the Same Capacity (Ah), Same Voltage (V), and are the Same Type (lithium iron phosphate (LiFePO4)).
   • As the built-in battery management system (BMS) may vary between brands, we advise you 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 series (up to 4 batteries) or in paral­lel (up to 4 batteries). Secure all cable connections between the cable lugs and terminals.

3. When determining the cable size (AWG) for your system, there are two factors to consider:

4. The size of the electrical load you want to power.

5. The distance between the electrical load and your batteries.
   For reference, see the following chart:
   Cables for Controller to Battery Solar Input Current| SA| 10A| 20A| 30A| 40A| 60A
   ---|---|---|---|---|---|---
   Wire Cross Section Area (mm2)| 1.5| 2.5| 5| 8| 10| 12
   WireAWG| 15| 13| 10| 8| 7| 6

Cables for Inverter to Battery

Cable Size

| Copper Conductor Diameter (inches)|

Maximum Amperage

---|---|---
6AWG| 0.20| 115
4AWG| 0.23| 150
2AWG| 0.30| 205
1/0AWG| 0.37| 285
2/0AWG| 0.43| 325
4/0AWG| 0.56| 440

About Rated Power

• The max. rated power of this battery is 1280W. When connecting 2 batteries in parallel, the theoretical max. power is 1280W x 2 = 2560W.
• Because home appliances draw power from the inverter, so if you’re using a 2560W battery bank, and the peak power of your home appliance is higher than 2000W, this home appliance will be unable to work via a 2000W inverter.
• The peak power of an AC motor appliance, such as an AC air conditioner or water pump, is double its rated power. For example, when using a 1500W AC air conditioner or water pump, it requires 2 x 1500W = 3000W of the battery bank and inverter to support normal working conditions.
• But please note that the peak power of some home appliances is 3 times the rated power.
• Please consult the manufacturers of your home appliances for the exact peak power data.

How to Charge the Battery

• The optimal charging current for a single lithium battery is around 20 amps, which can extend the battery’s lifespan. And 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 1 ODA, we do NOT recommend re-charging it at 50A immediately, which will trigger high-temperature charging protection.

How to Store Battery

• To store your battery, keep it at least 30%-50% charged. We recommend that you charge the battery every 6 months when not in use to prevent overdischarge.

DISCHARGE CURVE AT DIFFERENT TEMPERATURES (0.SC)

CHARGING PERFORMANCE (0.SC, 77°F/25°C)

CYCLE LIFE VERSUS DEPTH OF DISCHARGE (0.SC, 77°F/25°C)

MONITOR SCREEN

State

(battery icon)

| Description
---|---
7Bars| Battery Voltage: 13.3V-14V      Battery Capacity: 91%-100%
6 Bars| Battery Voltage: 12.9V-13.3V      Battery Capacity: 78%-90%
5 Bars| Battery Voltage: 12.5V-12.9V      Battery Capacity: 65%-77%
4 Bars| Battery Voltage: 12.1V-12.5V      Battery Capacity: 52%-64%
3 Bars| Battery Voltage: 11.7V-12.1V      Battery Capacity: 39%-51%
2 Bars| Battery Voltage: 11.3V-11.7V      Battery Capacity: 26%-38%
1 Bar| Battery Voltage: 10.9V-11.3V      Battery Capacity: 13%-25%
No Bars| Battery Voltage: 10.5V-10.9V      Battery Capacity: 0%-12%

• The measurement accuracy is approx. 100mV.

Note:
Please turn off all connected electrical appliances to ensure there is no high power output before checking the current battery capacity.

The reason is that the battery capacity displayed on the screen is measured in real-time voltage. Normally, the battery voltage will instantly drop when an inverter or other heavy load is operating on the circuit. Accordingly, the remaining battery capaci­ty, indicated by how many bars are left, will also fall.

WARRANTY

• Dr.Prepare provides a limited warranty from the original purchase date:
  LiFePO4 battery: 10-year limited warranty
  The LED screen on the battery: 1-year limited warranty
  If you encounter any issues during usage, feel free to contact us at support@drprepare.com

• We only provide after-sales service for products sold by Dr.Prepare or retailers and distributors authorized by Dr.Prepare. If you have purchased your unit through other channels, please contact your seller for more information about the return and warranty.

SUPPORT INFORMATION

Need help? Feel free to send us an email at support@drprepare.com Want to see more products? Visit the website drprepare.com

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