Blog Post

The Importance of a quality BMS system In Lithium Batteries

tim • February 27, 2021
One of the most crucial components of a lithium battery is the internal BMS system. BMS stands for Battery Management System and this part of the battery is extremely important. 

Lithium batteries can be in danger of exploding under severe over-charging conditions, causing damage to the battery and posing a threat to your asset and your personal safety. The BMS is a control system which controls and protects the battery cells during performance and from damage preventing potential faults from occurring. A quality BMS system will disconnect loads if the voltage gets too low and disconnect chargers if the voltage gets too high. Over voltage for a prolonged period during charging can cause plating of the metallic lithium on the battery’s anode which permanently degrades performance.


If the battery discharges too low, it becomes impossible to recover using standard battery chargers. So if you have bought a Lithium battery and thought why has this battery discharged to 1 volt and I can no longer charge it, then its most likely due to it’s poor BMS. Unfortunately, there are many of these available online to buy and Consumers are tempted by the cheap price.

Lithium-ion batteries have a major difference from Lead Acid batteries when it comes to balancing the voltages in each individual cell during charging. In Lead Acid batteries if one cell charges faster and reaches full voltage, the typical low end of the charge current, will ensure the other cells get fully charge. So the Lead Acid batteries are self-equalizing during charge. This is not the case with Lithium Batteries. When a Lithium-ion cell is fully charged, it’s voltage begins to rise further which may lead to electrode damage. If the charge of the entire battery is stopped when only one cell is fully charged, the remaining cells do not reach full charge and the battery will operate below peak capacity. A well designed BMS ensures each cell will safely and fully charge before the entire charging process is complete. 

Unlike Lead Acid batteries, Lithium Iron Phosphate batteries operate efficiently and safely at temperatures up to 60 degrees Celsius or more. But higher operating or storage temperatures will lead to the electrode material degrading. The BMS of a Lithium battery uses embedded thermistors to actively monitor the temperature during operation and will disconnect if the maximum temperature is reached. They also vary in how much current they can handle. The most reliable BMS systems will be rated at 100 amps, despite the battery rating being declared at for instance 50AH or 80 AH or 100AH. So a good question to ask the Retailer or check the specification sheet before purchasing. If they dont know or its missing from the Spec sheet then its a warning sign.

To demonstrate, we show you an example of a very poor BMS system that was discovered in a common 300mm Group 27 100AH rated battery. You can see the corrosion inside the battery, caused by poor quality components. If you look closely, you will read the label on the BMS as only rated to 35 amps. This makes the manufacturing of the battery a lot cheaper, however it makes the performance and life expectancy really poor and the product in application potentially hazardous. 
In this case you are not buying what you think you are! You are also limited to what you can use this battery for, as the low rated BMS limits its performance. And just to show you a standard looking BMS from another brand, Im sure you can see the difference for yourself.

A lot of the applications we specify Lithium Batteries for, do have higher surge currents. That’s what makes Lithium so good. Low level rated BMS systems take this advantage away and can be dangerous.

So in conclusion a good BMS system is fundamentally the key to a good quality Lithium battery and essential to its performance. Its a classic case of paying for what you get and the good quality brands are the ones that cost money and reflected in the price you pay. 

Unfortunately we see our customers too often being burnt by cheap Lithium failures exposing themselves to harm and damaging their hard earned assets eg. caravan or boat. Whilst you pay a lot more than an AGM battery equivalent, a good quality Lithium is particularly beneficial if you are keeping your asset for 4 plus years, you want best cycling performance, light weight and want fast recharging. This cost versus benefit ratio will do you well over the journey. If you are looking for something to serve your purpose for 4 years or less, you will probably find an AGM battery is best fit for purpose.
December 3, 2024
Need a quick and easy gift for any occasion? Our gift card is the perfect answer. From $20 - $500 our gift cards are available for redemption on all instore products and services offered. Make someone's day and get them a gift card today.
October 18, 2024
Discover the Convenience of 30-Second Awnings – Visit Us for a Demo, Hands-On Experience, and Unbeatable Pricing! When it comes to outdoor adventures, having the right gear can make all the difference. If you're someone who enjoys camping, 4WD trips, or simply spending time outdoors, you know that setting up cover for shade or rain quickly and easily is essential. That’s where 30-Second Awnings come in. These innovative awnings are designed to transform your outdoor experience, offering fast and reliable protection from the sun and rain – all in just 30 seconds!  Gone are the days of wrestling with complicated setups or spending valuable time trying to pitch a canopy. With a 30-Second Awning, you can set up and pack down in a flash, allowing you to focus on what matters most – enjoying your time outdoors. Whether you're setting up for a beach day, a picnic, or an overnight camping trip, these awnings provide instant shade and comfort without any hassle.
August 14, 2024
In the vast expanse of Australia’s battery market, one name stands out as the pinnacle of power, reliability, and longevity: Trojan Batteries. Renowned for their unparalleled performance and unwavering durability, Trojan Batteries have earned their place as the top choice for consumers across the country. Sold by Newcastle Batteries in Wickham and Warners Bay, they represent the gold standard in battery technology.
July 10, 2024
Is Your Car Struggling to Start This Winter? Your Battery Might Be Feeling the Cold... Winter is here, and with it comes the dreaded cold weather that can wreak havoc on your car battery. If your car is struggling to start, it might be time to give your battery some attention. At Newcastle Batteries we offer a **FREE Battery Health Test** to ensure your car battery is ready for the colder months ahead. Don’t let the winter chill leave you stranded – come in today! FREE BATTERY TEST – No Obligation We understand the importance of a reliable car battery, especially during the winter. Cold weather is notorious for being a killer of sick car batteries. The last thing you need is to be stuck with a dead battery on a freezing morning. Our **FREE Battery Health Test** will give you peace of mind, knowing that your battery is in top shape to handle the winter cold. No obligations, just straightforward advice and service. Comprehensive Battery Services At Newcastle Batteries , we offer car batteries for all budgets. Whether you need a cost-friendly option or a high-performance battery, we've got you covered. Our expert team will help you find the perfect battery to match your vehicle and your needs. Our expert team knows all your car battery replacement requirements including Start/ Stop ISS and even Electric Vehicle EV auxiliary batteries. **Free Battery Health Test**: Ensure your battery is ready for winter. **Wide Range of Car Batteries**: Options available for every budget. **Expert Advice**: Our team is here to help you make the best choice. Why Choose Newcastle Batteries? **Local and Trusted**: We are your local battery experts, committed to providing top-notch service and battery fitment, using the latest diagnostic tools to synch your battery to your vehicle. **Quality Assurance**: We only stock reliable, high-quality batteries. We trust in the proven performance of Exide Batteries **Customer Satisfaction**: Your satisfaction is our top priority. We make sure you leave our shop with confidence and that our after-sales-service is second to none, every time. Don't Wait – Visit Us Today! Give us a call, or drop by our battery shop today for your **FREE Battery Health Test**. Ensure your car battery is ready to face the winter cold head-on. Don’t let a weak battery leave you out in the cold!
March 14, 2024
Newcastle Batteries is committed to providing comprehensive and professional service to our customers. With the ever-evolving technology in modern cars, ensuring the correct car battery configuration is essential for optimal performance and longevity. Gone are the days when replacing a battery was a simple swap-out procedure. Modern vehicles are equipped with sophisticated CO2 production control systems, such as smart charging and Idle Start Stop (ISS), which demand precise battery configurations and registration with onboard computer systems. Car Battery Replacement Experts Newcastle Batteries uses the best diagnostic tools to ensure your car battery replacement is done right, every time. Failure to adhere to these specifications can lead to a cascade of issues, none of which are covered by the manufacturer's warranty. Potential consequences of neglecting proper battery configuration: Undercharging or Overcharging: Incorrect battery parameters can lead to undercharging or overcharging, both of which can damage the battery irreversibly. This damage isn't covered by warranties, leaving vehicle owners with unexpected repair costs. Loss of ISS Functionality: Particularly the Idle Start Stop system, designed to reduce emissions and improve fuel efficiency, relies on precise battery parameters. Failure to configure the battery correctly may result in the loss of this functionality, impacting both environmental performance and fuel consumption. Loss of Non-Critical Vehicle Systems: Many modern cars rely on intricate electronic systems for various functions. Improper battery fitment and configuration can disrupt these systems, leading to malfunctions or failures that compromise the overall driving experience. Our highly trained, local Battery Experts at Newcastle Batteries use the best-in-class diagnostic tools and the right battery every time. The BT608 battery diagnostic tool is a great example of what Battery Traders uses. It is a leading-edge solution designed to streamline the configuration process for vehicles equipped with smart charge and ISS systems. This tool plays a pivotal role in ensuring: The vehicle recognises the installation of a new car battery. The charging system adjusts to accommodate the new battery's characteristics. The vehicle utilises the correct charging parameters tailored to the new battery. The BT608 isn't just a configuration tool; it's a comprehensive diagnostic powerhouse. From testing 6 & 12V batteries using adaptive conductance to analysing 12 & 24V charging/cranking systems and even reading and erasing basic non-critical error codes, this tool offers unparalleled versatility and functionality and is best practice. If you need a new car battery for an ISS Stop Start or smart-charge car battery replacement, ask what diagnostic tools they use. Unfortunately, some car battery shops will fit what they have and hope for the best. By being informed about the advanced tools and techniques employed during the installation process, your vehicle and battery will last longer and not cause any unintended consequences. In today's fast-paced automotive landscape, staying abreast of technological advancements isn't just our promise; it's a necessity. With the BT608 and highly trained battery technicians, your car battery replacement is assured, warrantied, and registered. Choose the best car battery replacement, choose Newcastle Batteries with the best battery prices.
September 22, 2023
GET CHARGED and save 30%! 30% OFF the renowned Victron Maintenance Charger with any battery purchase over $50.* Save money on replacement batteries, keep your batteries charged up and get even longer life. Features: • Smart Charger • Built-in Bluetooth • Also suitable for Lithium Batteries • Cabling & Quick Fit Connectors Included • Multi-Stage Charging • Recovery of Fully Discharged Batteries • Battery Reconditioning 30% Off Victron Maintenance Charger Normally $99.95 now $69.95 with any battery purchase over $50. * In addition to FREE Battery fitment on most vehicles and batteries for all budgets. The Blue Smart IP65 Charger can be used on batteries at your home, workshop, garage or storage. It is perfect for a range of vehicles including Cars, Motorbikes; Boats, Jet skis, 4WD’s, Motorhomes, SUVs & Camper Vans. Your vehicle will be ready to go every time. Your battery will be charged, smartly... to perfect condition all automatically! The seven-step charging system gets the best out of your battery. The charger gives the battery the power it needs, maintains its health, ensures better performance... and most of all, a longer life. Recovery of deeply discharged 'dead' batteries. Unlike other brands, the Blue Smart IP65 Charger aims to recharge a deeply-discharged battery by force-feeding it with a low current. Normal charging will then be resumed automatically as soon as there is sufficient voltage across the battery terminals. Connect the battery with ease! The charger comes with both crocodile clips and M8 eyelets – this means it is easy to connect to the battery. You are able to leave it permanently connected to your battery. Remote Status of your battery The Blue Smart IP65 is equipped with built-in Bluetooth. A fantastic feature allowing you to check the status of the charger and the battery anywhere via your smartphone, tablet or laptop. Settings of the charger can even be configured with the Victron Connect app. *Ts&Cs Apply. One per customer only. Limited time, while stocks last.Discount applies to the IP65 6V/12V 1.1A.
August 17, 2023
If you need a new Car Battery in Newcastle contact us for: A FREE Battery Test – to give you the peace of mind that the issue is the battery and not other electrical problems. We will even give you the test report. We will not replace your car battery if it is not needed and can recharge your existing battery if it’s just flat. Batteries for ALL Budgets – we have a great range of products with full manufacturer warranties and a range of quality options to suit your needs and budget. We will specify the best option at the best car battery price. FREE Battery Installation* - we fit your new battery for free in most vehicles. Save time, money and potential vehicle damage. Not all car batteries are made equal and not all car battery fitments are easy. It is also very important to protect your electrical equipment during battery installation. Modern vehicles are very different to your old car battery needs now your car is equipped with on-board computers that run the entire Eco centre of the car and engine. Sometimes your Engine Management System (EMS) needs to be reset. Care should be taken when fitting a car battery to ensure your onboard computer is not damaged. Some cars need specialist batteries, such as a Stop/Start Battery Replacement, which are very different to your normal car battery. Fitment is also more technical and demanding. Leave it to the experts and pay nothing – we are highly trained to ensure your car battery replacement and fitments are done using the right memory minders, scan tools and expertise. If you need a car battery installed, contact us for FREE Battery Installation* using your local Newcastle Battery Experts. We will also check to ensure all your Battery Cables, Battery Terminals, Cable Lugs, Battery Terminal Bolts or Wingnuts, Battery Box, Battery Brackets, and Battery Tray are all sound, clean and operational. If they need replacing, or cleaning, we can do that also. We have batteries for all budgets and offer FREE Car Battery Installations* This includes 4WD Batteries. Don’t risk doing it yourself ! Many Car Battery Shops will sell you a battery to take home and some do car batteries as a side to their normal business. We do Batteries first and foremost. With decades of experience, the right battery technology and the best battery prices, the choice is easy.
June 21, 2023
Need big capacity but have limited space? Enquire about our SLIMLINE LIGHTBASE Lithium 135 & 160A/h batteries today! Our LiFePO4 Lithium Battery is supplied fully protected by a sophisticated specially designed lithium battery management system that carefully monitors every cell to ensure the battery is always optimised for longer life and higher performance. Unlike gel or lead-acid batteries, these Lithium batteries are safer, lighter, and more powerful with a long service and shelf life compared to traditional batteries. No changing of charging systems, equipment or extensive re-wiring is required. You simply pull your old heavy batteries out (if your back allows it) and put the new lightweight LiFePO4 battery in. It's as easy as that. The 135A/h & 160A/h are the perfect drop-in upgrade for your existing old and heavy batteries, Invest in this high quality option for your dual battery system today! FEATURES: Now with 3 years Australian warranty! Ideal battery if you have limited space! Lithium iron Phosphate Battery(LiFePO4) All our Lithium Batteries are comprised of prismatic cells & are backed with LiFePO4's signature built-in BMS. They are also tested to deliver 100% real capacity and are suitable for parallel and series wiring of up to 4 battery packs.
June 18, 2023
Need a portable 12V Fridge Freezer, check out our Brass Monkey products. Brass Monkey Fridge/ Freezers have built a reputation on reliability and value for money. Now we can add innovation into the equation. It has often been difficult to run a car fridge/ freezer without the car or 4WD. Often people have invested in battery boxes but even with Lithium Batteries, this is a cumbersome proposition when you don’t have your vehicle near-by but want the flexibility of cold food and drinks (think Beach, Jetty and other locations). All that has changed, with specific Brass Monkey Fridge/ Freezers coming with optional onboard batteries and solar charging. Simply unplug your new 12v fridge/ freezer from your car, or mains power and off you go. Options even come with wheels. This means NO MORE MELTING ICE and complete freedom to move around without being connected to 12v or 240v power.
May 9, 2023
Is your car, truck or machinery battery more than a couple years old? Or maybe you don't drive it often? Don't get stuck waiting in the cold this winter. Our expert team will perform a battery health check for you FREE of charge so you don't have to worry. Save yourself time and money by dropping in to Newcastle Batteries in Wickham or Warners Bay for your free battery health check today! If you need a new battery we also stock and fit a complete range of batteries to suit any application and budget.
Show More
Share by: