Battle Born Batteries are very safe, and one feature that helps protect people and their batteries is Low-Voltage Disconnect (LVD). This safety feature prevents you from completely depleting your lithium battery and destroying it. But if you don’t know your lithium battery has LVD protection, you might think your battery is dead. So, let’s talk about Low-Voltage Disconnect and what you can do to “wake up” your battery so you can get out there and stay out there longer.
How Low-Voltage Disconnect Protects You
We got a request to talk about Low-Voltage Disconnect from one of our brand partners: professional angler Matt Shura. His friends love running our 50Ah 12V batteries in their boats all day on the water, but by the time they get back on dry land, their batteries are drained and go into Low-Voltage Disconnect (LVD) mode.
Low-Voltage Disconnect is a feature of our internal Battery Management System (BMS), which comes inside all Battle Born batteries and has lots of other safety features programmed into it to protect your investment and preserve the life of your battery. When fully depleting a Battle Born battery, the BMS detects when the battery’s voltage falls below 10V, and it will disconnect the battery. This prevents any charge from leaving the battery to protect it from damage. Many people will think their Battle Born battery is dead, but it’s just in LVD and not sending out a charge.
When a battery enters Low-Voltage Disconnect, it needs to be jumped with another 12V source to “wake up” the battery. It’s important to jump the battery within 5 days of the battery going into LVD mode to preserve its lifespan. Leaving the battery at a 0% charge for too long can damage the battery and void your warranty.
Fully depleting any battery can ruin it. That is why our internal BMS is so essential to protect your battery. Many people who buy lithium batteries that don’t have an internal BMS usually buy an external one to monitor them. Lead-acid batteries often lack this protection and are vulnerable to complete ruination.
Waking up Your Battery
Many chargers must detect a voltage of more than 5V coming from the battery to charge it, but many chargers are different, so be sure to check their user manuals for charging requirements. But in Low-Voltage Disconnect, a voltmeter will only read 0-5V from the battery because the BMS has disconnected it. So, sometimes you have to jump the battery before charging it, depending on the charger.
The most low-tech method to getting a battery out of Low-Voltage Disconnect is to jump it with another 12V source. Just connect your Battle Born battery to a starting battery from a boat or car, and jump like you would a car battery, leaving them connected for a few minutes. This should wake up the Battle Born battery, and if you have a voltmeter, you should be able to read a voltage above 10V coming from the battery. Then you can charge it normally.
There are a few products that can make waking up your battery easier. The best choices include using a lithium jumper pack or a Victron Blue Smart IP65 Charger. Jumpstarters are portable packs used to jump car batteries and are a great way to wake up a Battle Born battery in Low-Voltage Disconnect.
Victron is a brand that we often recommend and sell in our online store. The IP65 and IP67 Chargers have a program that recovers deeply cycled batteries. They also connect to smartphones to give you extra control when charging your batteries. You can learn more about the Victron Blue Smart Chargers and how they work on Victron’s website.
Low-Voltage Disconnect is a critical protection for your Battle Born batteries, and understanding it can save you a bit of head-scratching and a lot of money. If your batteries are going into LVD often, it may be a sign you should expand your battery system. If you have a Battle Born 50Ah 12V LiFePO4 battery, our 100Ah 12V battery is a great upgrade. Or you can buy another 50Ah battery and connect it in series or parallel, depending on your needs.
Have a specific question? Our Reno, Nevada-based sales and customer service team is happy to answer questions and help you build your system. Call them at (775) 622-3448.
Also, join us on Facebook, Instagram, and YouTube to learn more about how lithium battery systems can power your lifestyle, see how others have built their systems, and gain the confidence to get out there and stay out there.