BATTLE BORN BATTERIES BB1250 50Ah 12V Group 24 LiFePO4 Deep Cycle Battery Installation Guide

: June 13, 2024
: BATTLE BORN BATTERIES

Table of Contents

What is in the Box?
What Do I Need for Installation?
Safety
Connecting the Batteries in Parallel
How Does the BMS Protect the Batteries?
Voltage vs. Capacity
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BATTLE BORN BATTERIES BB1250 50Ah 12V Group 24 LiFePO4 Deep Cycle Battery Installation Guide

What is in the Box?

Included with your purchase is:

(1) BB1250 Battle Born Battery
- Dimensions (L x W x H): 10.49” x 7.11” x 8.93”
- Weight: 22 lbs.
- Operating Temp Range: -4°F (-20°C) to 140°F (60°C)
- Absorption Time: 15 Minutes per 50Ah Battery Bank
- Water Resistant and Sealed (Batteries should not be submerged) BB1250 Assembly Drawing
- Built-in BMS (Battery Management System)
- Made with Cylindrical Cells
- Comes with standard flag style terminal posts with a 3/8” hole to accommodate either a 3/8” or a 5/16” bolt
(1) Finishing Hardware Kit
- (2) ‘18-8 Stainless Steel’ 5/16-18 x 1” Bolts
- (2) ‘18-8 Stainless Steel’ 5/16-18 x 1 1/4” Bolts
- (4) Washers
- (2) Nylok Nuts

BB1250 Assembly Drawing

What Do I Need for Installation?

If you already have your system set up and are ready to drop in your batteries, you will need a torque wrench that is able to fit to and properly torque your 5/16” finishing hardware. This is REQUIRED to make sure that you torque to the specification of 9 to 11 ft-lbs., otherwise you may cause system failures and damage.

Connecting Load Specified Cables to the Batteries

Identify the positive and negative terminals. These are labeled and color-coded red for positive (+), black for negative (–).
Determine which finishing hardware set you will use. Verify that your bolt can fully seat into the nylok insert of the nut. If multiple lugs are used, longer bolts may be required for the bolt to fully seat into the nylok insert of the nut.
Connect your cable lugs to your battery terminal with the previously identified finishing hardware set. Make sure to connect your positive load specified cable lug to the positive terminal and the negative load specified cable lug to the negative terminal. The proper order to connect to your terminal with a finishing kit is shown in Fig. 1.

Figure 1: Proper order of hardware to connect cables. When going from left to right in the diagram the correct order is:bolt, washer, lug, terminal, washer, and nut. If multiple lugs are used, they should be on the same side of the terminal.
When connecting to your battery terminals, DO NOT finger tighten. Use a torque wrench to torque your hardware to the specification of 9 to 11 ft-lbs. Failure to adequately secure connections can result in severe damage and will void your warranty.
Fig. 2 below demonstrates proper and improper connections.

Safety

While LiFePO4 batteries are inherently safe, as with all batteries, energy storage devices, and electrical equipment, safety and electrical hazards do exist. Failure to follow these safety instructions may result in electrical shock, injury, or death, or may damage the battery or other equipment or property.

Installation

The battery should be installed as per national and local codes.
The battery should only be installed in locations approved by local building codes.
Electrical and shock hazards can be minimized by covering the solar array and using insulated tools.
Do not short the battery terminals.
Do not install the battery if there are any signs of physical damage.
Do not install the battery in a location that may be flooded.
Operation
Use only approved battery chargers for charging the battery.
Do not disassemble the battery.
A CSL is required for use with inverters 3500W or higher. Emergency
Disconnect the battery from the system.
Wear a respirator, eye protection, and rubber gloves where appropriate.
Use an ABC type dry chemical fire extinguisher.
Dispose of as per local regulations.
How to Properly Charge the Batteries
To properly charge your Battle Born batteries, you will want to verify that any charging component in your system is capable of being programmed for the following specifications. Charging components can include, but are not limited to converters, inverter chargers, solar charge controllers, DC to DC chargers, etc.
Bulk/Absorption: 14.2V – 14.6V
Absorption Time: Two batteries in parallel connections require 30 minutes 100Ah
Float: 13.4V – 13.8V
Equalization: 14.4V/ Disabled
Temperature Compensation: 0/Disabled
Charge Rate: 50% of the battery or battery bank capacity
Battery Charge Temperature Range: 32°F (0°C) to 131°F (55°C)
Battery Discharge Temperature Range: -4°F (-20°C) to 140°F (60°C)
Cell Charge Temperature: 32°F (0°C) to 131°F (55°C)
Cell Discharge Temperature: -4°F (-20°C) to 140°F (60°C)
NOTE: Not all chargers are capable of multistage charging. If yours is not, you will want to verify it can be programmed for the Bulk/Absorption voltage and have the other items mentioned disabled if applicable. Consult your charger’s manual or the manufacturer.

WARNING

Do not short battery terminal.
Do not reverse polarity.
Do not pierce battery casing.
Do not attempt to disassemble.
Do not drop or mishandle.
Do not immerse in water.
Do not operate with loose connections.
Do not operate battery in series or in parallel with any other type of battery.
Do not connect more than two batteries in series.
Do not operate using cables that cannot accommodate the maximum current that can be delivered by the batteries (Please contact technical support to verify that you are using appropriate cables and contacts.)

Connecting the Batteries in Parallel

Why Connect in Parallel?

Multiple BB1250 batteries may be connected in parallel to increase the capacity and current of the system. When batteries are connected in parallel, the voltage of the system does not change, but the capacity and current limits are additive. For example, two BB1250 batteries connected in parallel (shown in Fig. 3) create a 12V 100Ah bank that can deliver 120A continuously and 200A for 30 seconds.

How to Make a Parallel Connection
NOTE: All cables and connections MUST be able to accommodate the high currents that can be delivered by the battery. Appropriate fuses and circuit breakers are highly recommended to protect downstream components from current spikes and short circuits.

Identify the positive and negative terminals. These are labeled and color-coded red for positive (+), black for negative (–).
Determine the appropriate finishing hardware set you will use. Verify that your bolt can fully seat into the nylok insert of the nut. If multiple lugs are used, longer bolts may be required for the bolt to fully seat into the nylok insert of the nut.
Make the proper cable connections to the positive of the first battery. Please reference Fig. 1 for the proper order of hardware.
When connecting to your battery terminals, DO NOT finger tighten. Use a torque wrench to torque your hardware to the specification of 9 to 11 ft-lbs. Failure to adequately secure connections can result in severe damage and will void your warranty.
Connect the other end of your positive cable to the positive terminal of the other battery you are connecting to. Repeat step 4.
Repeat steps 3-5 for the negative connections.
Repeat steps 3-6 for additional batteries in the system. An example of a finished connection can be found below in Fig. 3.1 and Fig. 3.2.

Figure 3.1: Two 1250 Batteries connected in Parallel to create a 12V 100Ah Battery Bank

Figure 3.2: Four 1250 Batteries connected in Parallel to create a 12V 200Ah Battery Bank

How Does the BMS Protect the Batteries?

All Battle Born Batteries come with a built-in battery management system (BMS) that protects the cells from many strenuous circumstances to protect the life cycles of the cells and your electrical system from potential damage. The BMS in the BB1250 allows for 60 Amps continuous, 100 Amp surge for 30 seconds, and 1/2 second surge for loads over 100 Amps. All of our BMS’ protect against the following conditions:

High Voltage Disconnect ( > 14.7V)
If an individual cell voltage exceeds a prescribed threshold during charging, the BMS will prevent a charge current from continuing. Discharge is always allowed under this condition. If the batteries have not been balanced for a long time, high voltage disconnect could occur at a lower voltage. The batteries will rebalance after several full charges.

Low-Voltage Disconnect ( < 10.6V)
If an individual cell falls below a prescribed threshold during discharge, the BMS will prevent further discharge. Although
the battery is in “low-voltage disconnect” mode, it will still allow a charging current.
NOTE: Many chargers must detect a voltage over 10V to send a charge to the battery. Please be aware that some chargers may not sense a battery in low-voltage disconnect and you may need to jump it with a 12V source to “wake up” the battery. You should jump your battery within 24hrs of entering low- voltage disconnect otherwise you risk damaging your battery and voiding the warranty. High Temperature Charging and Discharging The BMS will not allow a charging current if the internal temperature of the battery has reached 131°F (55°C). If the internal temperature of the battery has reached 140°F (60°C), the BMS will not allow a discharging current.

Low Temperature Charging
The BMS will not allow a charging current under 32°F (0°C) but will continue to discharge down to -4°F (-20°C).
NOTE: The BB1250 has an operating temperature range of -4°F (-20°C) to 131°F (55°C). High Current Discharge Surges The BMS will not allow a current that exceeds 100 (+/- 5%) Amps for more than 30s, or anything larger for 0.5s. After a high current disconnection, the battery will automatically reconnect after 5 seconds.

Short Current Discharge Surges
Our BMS has built-in short circuit protection. If the short circuit protection is tripped, the BMS will shut the battery down and will remain disconnected until you remove the battery cables. While the battery cables are disconnected, we suggest taking the voltage of the battery with a voltmeter. If it reads above 10V, reconnect the battery cables. If you are unsuccessful at obtaining a voltage reading above 10V, please give our technical support team a call.

Balancing of Cells
A passive balancing process is activated by the BMS at the top of each charge cycle when the battery voltage exceeds around 14.2V. This ensures that all the cells remain at the same state of charge, which helps pack longevity and performance.

Voltage vs. Capacity

Voltage

Capacity

How to Properly Size Cables for System Install
When considering cable sizing there are a few factors to consider. First, what is the size of the load you are powering with the battery bank? Second, how far away from the battery is the load? You can do voltage drop calculations to see if you need to step up your cable size. Fig. 5 is a chart to use for reference. Do keep in mind that cables are only capable of carrying a certain amperage and you should verify the specifications of your cable and the power draws before implementing them into your system to avoid potential failures and damage.

Cable QR Code

Table

Figure 5: As a rule of thumb, you can use these numbers as a guideline.

How to Incorporate Fuses into System Install ANL fuses are designed to melt and separate into two pieces for the purpose of breaking a circuit in the event of excessive current. These fuses are essential components for protecting against a catastrophic event and are typically placed between Battle Born Batteries and the inverter/load.

Fuse QR Code

How to Properly Store Batteries

We recommend bringing the Battle Born batteries to a 100% state of charge. Then, disconnect the battery from any loads by removing the negative cable from one battery. On average, the batteries lose approximately 2-3% capacity per month. This is subject to increasing if stored in extreme environmental conditions.

Storage QR Code

How to Maintain the Batteries
Battle Born Batteries require very little maintenance. If your batteries are in series and not being charged by a multi-bank charger it is recommended that you fully charge the batteries individually once a year if the system is used frequently. This will internally balance your batteries to ensure that they will reach their expected life span and allow you to get the full power out of them with each use. If your batteries are in parallel this is not necessary, just make sure the batteries are charged to 14.2V – 14.6V frequently for internal balance. Our BMS has a built-in passive balancing system that will take care of this for you.
Please Note: A CSL is required for use with inverters 3500W or higher.
For more FAQs scan the QR code.
To see what else Battle Born Batteries has to offer, scan the QR code to the right or visit
https://battlebornbatteries.com/shop/

FAQ QR Code

How to Properly Recycle and Dispose of the Batteries

Battery Line QR Code Here at Dragonfly Energy our goal is to provide our customers with long lasting green energy that will support them for years on all their adventures. That is why we not only build batteries that can keep up with you for a long time but also provide industry leading customer support to help you get the most out of your batteries. When the time does come, and your batteries have reached the end of their lifetime it is important to recycle them responsibly.
Here are a few suggestions:

Make sure all loads are removed from your system before removing the batteries. Once the batteries are removed cover the terminals using electrical tape. Now can be a good time to inspect any cable runs or lugs.
Visit www.earth911.com or www.call2recycle.org/locator to find a drop off location. Be sure to call ahead of time to confirm that the drop off location is still accepting materials.
Give us a call if you are having any trouble finding a drop off location and we can help you find one.

Battery Line QR Code

Limited Warranty

Please find Limited Warranty information online at https://battlebornbatteries.com/limited-warranty/ or via phone at 855-292-2831.

Limited Warranty QR Code

Return Policy
You have 30 calendar days to return an item from the invoice date. To be eligible for a return, your item must be in the same condition that you received it in. You must have the receipt or proof of purchase. If an item is new, unused, and in the original packaging, we are happy to accept a return up to 30 days from the original invoice date with no restocking fee. The item must be returned with its original packaging. Original packaging must be in the same condition as it was received, otherwise you may be responsible for a restocking fee. If the item has been installed, used, or no longer has the original packaging, we will assess a restocking fee that will be shared when the return merchandise authorization (RMA) is issued. Items 60 days past the original invoice will be reviewed at Battle Born’s discretion. Returns will not be accepted without an RMA number, which can be obtained by filling out the return form at https://battlebornbatteries.com/returns/. To avoid being charged restocking fees, review the full return/refund policy at https:// battlebornbatteries.com/terms- conditions/#returns.

Refund Policy
You have 30 calendar days to return an item from the invoice date. Once we receive your item, we will inspect it and notify you that we have received your returned item. We will immediately notify you of the status of your refund after inspecting the item. If your return is approved, we will initiate a refund to your credit card (or original method of payment). You will receive the credit within a certain amount of days, depending on your card issuer’s policies. No refund is guaranteed after the initial 30 days has passed or if the item has been used.

Shipping
You will be responsible for paying for your own shipping costs for returning your item. If you are returning prior to 30 days from the
original ship date, you may be eligible for a free return. In order to be eligible for free shipping, you MUST have the original packing
in which the order was shipped, including boxes, foam, wrapping, and pallets if necessary. Not all items will be eligible for free
return shipping. Shipping costs are nonrefundable. If you receive a refund, the cost of return shipping may be deducted from your refund. If you have any questions, please contact us by calling 855-292-2831 or email us at info@battlebornbatteries.com. Notice: Product improvements and enhancements are continuous; therefore, the specifications and information contained in this document may change without notice. Dragonfly Energy Corp. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Dragonfly Energy Corp. Copyright © 2022, Dragonfly Energy Corp., all rights reserved. Battle Born Batteries® is a registered trademark of Dragonfly Energy Corp. All other trademarks, trade names, service marks, and logos referenced herein belong to their respective owners.

Lithium-ion vs. Lead-Acid

| Battle Born Batteries 100Ah 12V| Lead-Acid 200Ah 12V
---|---|---
Depth of Discharge| 100%| 50%
Self-Discharge Rate| 2-3% Per Month| Average of 33% Per Month
Battery Life| 3,000-5,000 Cycles| 500-1,200 Cycles
Weight| 31 lbs| 144 lbs
Warranty| 10 Years| 2-3 Years
Customer Support| Lifelong| Non-Existent
Upfront Cost| Under $1,000| $450
Cost Over 10 Years| Under $1,000 at Initial Purchase| $1,350-$3,600
Battery Protection| Internal Battery Management
System (BMS)| Non-Existent

Recommended Accessories (Available via battlebornbatteries.com or call us at 855.292.2831)
BMV-712
With Bluetooth built-in, the BMV-712 is the most efficient way to monitor your system. Being a shunt-based device, the unit will monitor power coming in and out of your system all at the palm of your hand. This device is highly recommended to give you the most accurate reading on your batteries.

MultiPlus Compact 2000 W
The Victron MultiPlus Compact Inverter Charger, as the name suggests, is a combined inverter and charger in one elegant package. Its many features include a true sine wave inverter, adaptive charging, and hybrid Power Assist
technology, plus multiple system integration features.
*This unit pairs well with 200Ah or more of battery capacity.

MultiPlus 3000 W
The Victron MultiPlus Inverter Charger, as the name suggests, is a combined inverter and charger in one elegant package. Its many features include a true sine wave inverter, adaptive charging, and hybrid Power Assist technology, plus multiple system integration features.

This unit pairs well with 300Ah or more of battery capacity.

MultiPlus-II
With all the functionality of a MultiPlus and a MultiGrid, the MultiPlus-II 2x 120V is a great option for those with 50A 120/240VAC split-phase applications. Whether it is supplied from shore power or a generator, the MultiPlus-II 2x 120V can accept and pass through both lines of a 120/240V supply, with the capability to utilize the full 50A for charging and

AC loads.
* This unit pairs well with 300Ah or more of battery capacity. Solar Charge Controller 100/50 A solar charger gathers energy from your solar panels and stores it in your batteries. Using the latest, fastest technology, SmartSolar maximizes this energy harvest, driving it intelligently to achieve full charge in the shortest possible time. SmartSolar maintains battery health, extending its life.

This device pairs well with up to 700 W of solar with a 12V battery bank.

Cerbo GX The
Cerbo GX communication center maximizes your system’s performance and allows you to always have complete control over your system from wherever you are. Simply connect through the Victron Remote Management (VRM) Portal, access directly using the separate GX Touch 50, or use the VictronConnect App with the device’s added Bluetooth capability.

RJ45 and VE Direct wires will be required to allow other Victron items to communicate info to the Cerbo.

Orion DC-DC Charger
The Victron Orion-Tr Smart DC-DC Charger is a DC to DC adaptive 3-stage charger with built-in Bluetooth. This device can be used in dual battery systems in vehicles or on boats where the alternator and the start battery are used to charge your house batteries. The unit can be monitored and programmed via Bluetooth and can be remotely controlled via a remote on/off switch.

The Orion-Tr Smart DC-DC Charger can be used in 12V or 24V systems. Models are available up to 400W and multiple units can be connected in parallel to increase output power.

IP65
The Blue Smart IP65 Charger is a professional battery charger with built-in Bluetooth. The Blue Smart IP65 Charger is a 12-volt, 15-amp charger that can be used with lithium-ion batteries in RVs, boats, and campervans.

This device is a great addition to offer a handheld charger to top off your batteries before connecting into your system.

Rich Solar Panels
Coming in a variety of options, Rich Solar Panels offer Mono PERC Technology, a lightweight, anodized aluminum frame, high transmission, anti-reflective coated tempered glass, a plug-and-play junction box, and industry-standard quick-connect cables that work in series or in parallel. These panels are certified to withstand challenging environmental conditions and are excellent with low light performance on cloudy days, mornings, and evenings

Battle Born Batteries BB1250 Manual | Edition.PIM_BB1250Rev015_08282023