Why do you need a battery monitor and what is it?
There are various improvements you can make to your battery system, but one of the easiest and most practical is to include a battery monitor. Let’s examine a battery monitor to see what it is and how it might help you make the most of your battery system. Read more…
Battery management systems (BMS) are electronic systems designed to manage the performance and health of rechargeable batteries. BMS with active cell balancing is a type of battery management system that actively balances the charge across individual battery cells to prevent overcharging and undercharging, which can reduce battery life and cause safety hazards.
Some of the features of a BMS with active cell balancing include:
- Cell monitoring: The BMS continuously monitors the voltage, temperature, and current of each cell in the battery pack to ensure optimal performance.
- Charge control: The BMS controls the charging process to prevent overcharging or undercharging of the battery cells, which can damage the battery or reduce its capacity.
- Discharge control: The BMS controls the discharge process to prevent excessive discharge, which can also damage the battery or reduce its capacity.
- Active cell balancing: The BMS with active cell balancing can actively balance the charge across individual cells in the battery pack, ensuring that all cells are charged and discharged evenly. This helps to prevent overcharging or undercharging of individual cells, which can reduce battery life and cause safety hazards.
- Fault detection and protection: The BMS detects and protects against faults such as overvoltage, undervoltage, overcurrent, and short circuits. It can also shut down the battery pack in the event of a fault to prevent damage or safety hazards.
- Communication: The BMS can communicate with external devices such as chargers or controllers, providing information about the battery status and allowing for remote control and monitoring.
Overall, a BMS with active cell balancing can help to extend the life of rechargeable batteries, improve their performance, and enhance safety. Read more..
Dual Purpose Cranking & Deep Cycling LiFePO4 lithium batteries for Marine Trolling RV 4WD
Key features:
Dual purpose LiFePO4 lithium batteries designed for marine trolling, RV, and 4WD applications have several features that make them ideal for these uses:
- Cranking Power: These batteries are capable of providing high cranking amps to start the engine of a boat or vehicle, making them ideal for use as a starting battery.
- Deep Cycle Capacity: They also have a high capacity for deep cycling, which means they can be discharged and recharged repeatedly without damaging the battery. This makes them ideal for use as a house battery to power appliances, lights, and other devices on board a boat or RV.
- Lightweight: LiFePO4 batteries are much lighter than traditional lead-acid batteries, which makes them easier to handle and transport.
- Long Life: They have a longer lifespan than lead-acid batteries, which means they can be used for many years before needing to be replaced.
- Fast Recharge: LiFePO4 batteries can be recharged quickly, which is important for applications where there is limited time to recharge the battery.
- Low Self-Discharge: They have a low self-discharge rate, which means they can hold their charge for longer periods of time without needing to be recharged.
- Safe: LiFePO4 batteries are much safer than traditional lead-acid batteries, as they are less likely to explode or catch fire. They also do not contain any toxic materials, making them environmentally friendly.
EJ is offering a full breadth of Dual purpose LiFePO4 lithium batteries as below
- Active cell balancing
- Waterproof IP67
- Capacity: 50Ah, 60Ah 100Ah, 150Ah 200Ah or 300Ah
- Cranking current: 600cca, 800cca, 1500cca, 1800cca
- Replacement for Lead-acid or AGM battery
- High/cold temperature cut off.
- OEM is available.
E&J Heated Lithium Iron Phosphate( LiFePO4) Battery pack with the addition of internally heated system
The E&J Lithium LiFePO4 batteries which is a cold-weather performance lithium battery, it can safely charge at temperatures down to -20°C (-4°F).
Waterproof IP67 LiFePO4 Battery pack 12.8v 100/110/150/165Ah Li-Ion Battery Pack
Key features:
- Waterproof IP67
- Capacity: 100Ah, 110Ah, 150Ah or 165Ah
- Replacement for Group 31 size Lead-acid or AGM battery
- 150A continuous discharge, 200A peak discharge
- Up to 4 modules in series to be 12/24/36/48V
- No limited in parallel
- High/cold temperature cut off.
- OEM is available.
Lithium batteries for Caravan/ Motorhome Ducato under-seat battery
The E&J Lithium LiFePO4 batteries are specially designed for mobile homes and for installation under the passenger seat. Many of the common motorhomes such as Fiat Ducato, Citron, Jumper, or Peugeot require an extra flat lithium battery for installation under the passenger seat. Depending on the seat console, 1~2 batteries can be installed in a row. with the new lithium iron technology, you can quickly and easily replace your previous lead-Gel or AGM battery for the first time.
Double capacity in the same space
60% less weight
Longer lifetime
12V Slimline LiFePO4 12.8V rechargeable front access lithium battery
The E&J Slimline LiFePO4 Rechargeable Battery has been specifically designed for replacement of similar size Lead acid batteries. The family is comprised of the popular sizes found in the lead-acid range but with the added benefits of Lithium Iron Phosphate (LiFePO4) technology and is ideally suited to deep cycle longer run time applications.
48V 120Ah 150Ah 180Ah GC2 GC8 Lithium batteries for Golf cars Automated guided vehicles
The 48V lithium battery was designed as an easy drop-in replacement of GC2 or GC8 Lead-Acid battery such as Trojan T-105, with carrying capacity, no maintenance, more battery charging speed Eco-friendly, and more battery cycle life.
LiFePO4 12.8v 100Ah Lithium iron phosphate Deep-Cycle 12V Lithium Battery for Solar Power, RV, EV, Farming and Marine
Don’t be fooled- batteries might look similar on the outside, but the key differernces between low-quality and high-quality batteries are on the inside.
E&J 73.6V Lithium Iron Phosphate (LiFePO4) Segway replacement batteryfor Segway X2 I2 PT series
Key features:
- 73.6v Lithium Iron Phosphate battery compatible for use with Segway®
- Ready to use.
- Overcharge and short circuit protected.
Portable & Waterproof Lithium Iron Phosphate (LiFePO4) Battery Packs
Key features:
- An easily portable, rugged & waterproof case to withstand a drop of water and even floats!
- Built-in Fuel Gauge to check the battery in real time.
- USB charger socket (power outlet 5v1A & 5V 2.1A) for charging mobile devices, light, light heating, etc.
- 12v DC car Cigarette lighter socket.
- Wired and ready to use.
- IP65 Waterproof standard.
- Overcharge and short circuit protected.
Lithium batteries for personal care products. 
Rechargeable batteries for personal care products
Rechargeable batteries for personal care products are one of the featured products. We’ve shared more than 60% on electric shaver batteries in the domestic market and we are expanding our overseas market.
Main advantages of our rechargeable batteries:
Low self-discharge and Long shelf time
Low Internal Resistance
Long life cycles
Good consistency
Safe and good liability
Our batteries are CB and UL certified. We can customize the battery packs according to your different requirement. We offer different battery solutions.
E&J High power li-polymer batteries pack for 2018 Oset 16″ and a 2018 Oset 20″ Oset bikes
High quality upgrade E&J lithium-polymer battery packs to suit all 24V/36V/48V OSET e-bikes models. This battery pack will DRAMATICALLY improve the handling and performance when compared to the standard SLA (Sealed Lead Acid) batteries. They are less than 1/3rd of the weight, last up to 3X longer and can be charged up in 1hr with an optional high powered charger, a high-quality 3hr smart charger is supplied as standard with this kit.
Lithium batteries for the Fishing kayak ( Perfect power for Trolling Motors, Fishfinder or smartphone etc.)
12V Lithium portable power for powering your fishfinder or any other electronics on your kayak. With USB ports, support smartphone or GoPro etc..
12V Lithium batteries replace of SLA (Sealed Lead Acid) battery for trolling motors such as catamaran sailboat.
Main advantages of our rechargeable batteries:
Low self-discharge and Long shelf time
Low Internal Resistance
Long life cycles
Good consistency
Safe and good liability
E&J Lithium iron phosphate (LiFePO4) batteries for Power Sports
Lithium iron phosphate (LiFePO4) batteries for POWER SPORTS ( ATVs, UTVs, Snowmobiles, Race cars). Replaces your standard Lead-Acid or AGM battery at only 20% of the weight, ultra-lightweight and will last up to 5 times longer than a stock lead-acid or AGM battery. Dry cell, no acid, no gassing splashproof/shockproof. Inbuilt BMS requiring no cell balancing.Direct drop-in replacement compatible with all 12-16v charging system onboard. Mach more linear power than Lead-acid or AGM.
Rechargeable batteries for Solar and Wind Off Gird systems
The batteries used to store solar and wind energy are currently mainly lead-acid batteries. Short lifespan and low cycle number of lead-acidbatteries make it a weak candidate for environment and cost efficiency.
Lithium-Ion batteries allow to equip solar or wind “off-grid” power stations, replacing the legacy banks of lead-acid batteries.
Benefits :
A lifetime (number of cycles) well above the lead-acid batteries (over 1500 cycles at 90% depth of discharge)
Footprint and weights 2-3 times lower than lead-acid
No maintenance required
Compatibility with installed equipment (charge controllers, AC converters, etc.) by using advanced BMS
Green solutions (non-toxic chemistries, recyclable batteries)
E&J Lithium Starter Batteries replace of original AGM, Gel, flooded, sealed Engine Start battery
The E&J LiFePO4 batteries refer to the Lithium Iro Phosphate(LiFePO4) Chemistry used. LiFePO4 or LFP batteries retain all the regular benefits of lithium-ion batteries but are significantly safer and are not prone to the overheating and explosive issues found in other chemistries. This chemistry allows for charge/discharge rates up to 10X that of lead acid chemistry( including AGM, Gel, Flooded, sealed, etc.) other benefits include full depth discharge capability, 1/3 the weight and up to 5 times the cycle life of conventional lead-acid.
E&J launched LiFePO4 (Lithium Iron Phosphate) battery which is for solar energy storage.
6V /12V / 24V LiFePO4 battery packs provide a more energy-dense and energy-efficient battery chemistry over the traditional batteries.
The popularity of the Li-ion battery is due to the advantages offered by other secondary (or rechargeable) batteries:
- Lighter than other rechargeable batteries for a given capacity
- Li-ion chemistry delivers a high open-circuit voltage
- Low self-discharge rate (about 1.5% per month)
- Do not suffer from battery memory effect
- Environmental benefits: rechargeable and reduced toxic landfill
Lithium Iron Phosphate (LiFePO4) lighting systems.
Lithium Iron Phosphate battery
E&J was one of the first battery suppliers in China who launched the range of lithium iron phosphate batteries for emergency lamps in 2012. After more than four years’ practical use it proved the good performance of lithium iron phosphate batteries in emergency lamps and exit lights.
Advantages of lithium Iron phosphate batteries:
- excellent charging performance at high temperatures
- extremely low self-discharge
- over 1000 times cycle life
- no memory effect
- fast to charge
- No toxic and harmful substances.