Battle Born Batteries BB8D User manual

The LiFePO4 Battle Born BatteryThe pinnacle of quality and safety at an unbeatable price point.
Get out there, stay out there.TM
Questions? Call 855-292-2831 or email us at [e-mail]
Please Read Before Installation
Model BB8D
270 Amp Hours
Deep Cycle Efficiency and Performance
The new BB8D may look like your everyday 8D battery, but that is where the similarities end. This 12V deep cycle battery is rated for 270Ah and weighs roughly 80 lbs. That’s over 50 lbs. lighter than a standard lead-acid 8D. Utilizing the same stable LiFePO4 chemical composition and built-in battery management system (BMS) technology as our other products, the BB8D is truly the biggest bang for your buck.The BB8D is perfect for large marine applications, or for off-grid applications. This battery is capable of being discharged to a 100% depth of discharge and charges 5 times faster than lead-acid. With the BB8D, the switch to lithium has never been easier. Built to last 10 to 15 years and backed by an industry leading 10-year warranty, at Battle Born Batteries we're making battery anxiety a thing of the past. •270 Amp Hour, 12 Volt Battery•LiFePO4 Chemistry•3000-5000 Cycles•Dimensions (L x W x H): 21.29” x 11.59” x 10.01”•81.4 lbs.•Operating Temp Range:-4°F (-20°C) to 135°F (57.2°C)•Water Resistant and Sealed (Batteries should not be submerged)•Designed and Assembledin the USA•Built-in BMS(Battery Management System)Specifications •Absorption Voltage:14.2V to 14.6V•Float Voltage:13.4V to 13.8V•Equalization Voltage:14.4V iIf Applicable)•Absorption Time:60 to 90 minutesper 270Ah battery bank•No Temperature CompensationCharging ParametersBuilt-in Battery
Management System
Our BMS keeps you and your battery safe and ensures your battery will last for many years.•300 Amps Continuous•500 Amps Surge for 30 Seconds•½ Second Surge for Loads Over 500 Amps•High/Low Voltage Protection•Short Circuit Protection•High/Low Temperature Protection•Cold Charging Protection•Automatic Cell Balancing at Top of Charge*Please Note: This built-in protection will reset after 5seconds in most fault conditions. Disconnecting thebattery from loads will also reset the BMS.

Questions? Call 855-292-2831 or email us at [e-mail]
BB8D FAQsCan LiFePO4 batteries be mounted in any position?
You can mount our batteries in any position. Our batteries use a non-liquid based chemistry and do not emit any fumes or gases. When mounting, make sure to properly secure and protect your terminals.How can I check my battery’s voltage?
If you do not have a battery monitor, you can purchase a multimeter to monitor
the voltage of your batteries. Please reference the voltage vs.capacity table on the right.How do I properly store my LiFePO4 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 placed in extreme environmental conditions while in storage. What is the maximum amperage I can charge
my batteries?
Our batteries allow a charge of 135amps per 270-amp hour battery bank. For
more than one battery, you can simply take the entire amp hours of the bank
and cut it in half (e.g. a total of 540-amp hours can be charged at 270amps).
Is it necessary to charge my batteries out of the box?
Yes, if you are connecting your batteries in series you will need to charge your
batteries out of the box. If you are connecting in parallel then you do not need
to. See the diagram below.Parallel Connection,12V540Ah bank Increases Ah, Voltage stays the same.Series Connection,24V270Ah bank
Increases Voltage, Ah stays the same.Please Read Before Installation
Get out there, stay out there.TM
The LiFePO4 Battle Born BatteryThe pinnacle of quality and safety at an unbeatable price point.
Voltage vs Capacity
For a single battery at 0A
Voltage Level
Remaining Capacity
14.4V 100% 13.6V 100% 13.4V 99% 13.3V 90%13.2V 70% 13.1V 40% 13.0V 30% 12.9V 20%12.8V 17% 12.5V 14% 12.0V 9% 10.0V 0%Negative LoadPositive LoadPositive LoadNegative LoadTo use the QR code, open the QR reader or camera on your smart phone. Hold your device over the QR code so that the code is clearly visible within the device’s screen. Your phone will automatically scan the code and pull in the corresponding weblink. For more FAQs, scan the QR code!Visit battlebornbatteries.com for additional warranty information. Quick Installation Tips:•Torque specifications - 9 to 11ft-lb.Do NOT finger tighten•Our batteries do not require ventilation since they do notemit fumes or gases, so you can put them in an enclosedareas.•Our batteries can be mounted in any orientation that issuitable for you.•Do NOT reverse the polarity of the battery, as this willdamage both the battery and the device connected.•The batteries come equipped with a 3/8" hole onthe terminal to fit either a 3/8" or a 5/16" bolt.Please see the manual for additional installation instructions.WWarrantyarrantyEvery Battle Born Battery is backed by an industry leading 10-year warranty. Your batteries are assembled in Reno, NV,making it easier and quicker in the event of a warranty issue!Warranty is non-transferable.ChargingResting