Dyness 2.4kWh 48V Lithium Battery

Introduction

The new generation of Dyness lithium battery modules offer more energy storage capacity in less space. Dyness B4850 48V is ideal for replacing old and heavy lead acid batteries.

Each battery is stackable in B4850 & B3 modules, so you can expand the storage capacity to suit the needs of your photovoltaic system. Each Dyness module is equipped with a separate BMS, making this battery more efficient and safe. The Dyness B4850 batt

Specifications

Dyness 2.4kWh 48V Lithium Battery

• Nominal Battery Energy: 2.4KWh.
• Nominal Capacity: 50AH.
• Nominal Voltage: 48V.
• Charging Cut-off vol: 54V.
• Discharging End-off vol.: 40.5V.
• Recommend C Rate: 0.5C.
• Continuous Max C Rate: 1 C.
• Charging Temperature Range: 0 – 50°C.
• Discharging Temperature Range: 20 – 50°C.
• Calendar Life: 6000 Cycles / Test conditions: 0.2C Charging/Discharging, @25°C, 80% DOD.
• Protection Level: IP20.
• Communication: CAN RS485/ DRY CONTACT.
• Certification & Safety Standard: TUV/CE/EN62619/IEC62040/UN38.3/CEC Accredited.

Key Points

Lightweight and compact

Electrodes commonly used in lithium-ion batteries, lithium and carbon, are lightweight on their own, making for much smaller and lighter batteries than their older counterparts such as lead-acid batteries. For comparison’s sake, a typical 51Ah (= ampere-hour) lithium-ion battery weighs about the same as a 24Ah lead-acid battery (about 6-7kg), but provides over twice the capacity.

This particular characteristic of lithium-ion batteries is especially convenient in head torches, as we can increase the light output and runtime significantly without adding bulk and weight to the battery pack (and on your head!).

Eco-friendly

The Dyness 2.4kWh 48V Lithium Battery and other Lithium-ion batteries contain relatively low levels of toxic heavy metals found in other types of batteries, such as lead-acid and nickel-cadmium (NiCd) batteries. Cadmium, lead, and mercury have been battery stalwarts for years, but prolonged exposure to, and inadequate disposal of these metals is harmful to humans, animals, and plants. Although Li-ion batteries are safer than many other types of batteries they still require proper recycling, so never put your used batteries in with your regular rubbish.

High energy density = A bigger punch

Lithium is a highly reactive element with the ability to release and store large amounts of energy, allowing li-ion batteries to pack a high energy capacity in a small size. This translates to lithium-ion batteries lasting much longer between charges than other rechargeable batteries, while still maintaining their high level of performance.

A typical lithium-ion cell (= battery) has an average cell voltage of 3.6V, whereas a nickel-metal hydride (NiMH) cell averages at 1.2V, meaning three Ni-MH batteries are required to match the output of a single lithium-ion battery.

Low maintenance

Older types of rechargeable batteries, such as nickel-cadmium or nickel-metal hydride batteries had a so-called “memory effect”, or “lazy battery effect”: If they were repeatedly partially discharged before being recharged, ultimately the battery would only deliver the amount of energy that was used during the partial discharges before its voltage would drop. To avoid this, NiCd and NiMH batteries would need to be regularly maintained by completely discharging and recharging them.

The Dyness 2.4kWh 48V Lithium Battery and other Lithium-ion batteries don’t suffer from the memory effect, which means they always give up their last bit of power, and you can recharge them whether you’ve used 100% or 25% of their capacity with no pesky maintenance needed!

More charge cycles

Quality lithium-ion batteries last about a 1000 full charge cycles. A full charge cycle is when the battery is discharged to flat and then recharged to full, so using your battery until it’s at 75% capacity and then plugging it into recharge doesn’t constitute a full charge cycle. When your battery has recharged back to full, you can still use the 75% of the capacity that you were left with before you recharged your battery; only then has your battery gone through a full charge cycle.

Low self-discharge rate

The Dyness 2.4kWh 48V Lithium Battery and other Lithium-ion batteries also have a relatively low self-discharge rate. Self-discharge is a natural, irreversible phenomenon for batteries, where chemical reactions inside the batteries reduce their capacity even when the battery is not being used. The self-discharge rate of lithium-ion batteries peaks at about 5% within the first 24 hours after charging the battery, and then tapers off to 1-2% per month. In comparison, nickel-based rechargeable batteries lose about 10-15% of their capacity after charge and another 10-15% per month.

Wide Compatibility

Dyness 2.4kWh 48V Lithium Battery

Dyness is proud to announce that our B4850 modules can work with:

• Victron.
• Goodwe.
• Imeon.
• Solis.
• Lux Power.
• Sofar.
• GMDE.
• Growatt.
• Voltronic.

Dyness 2.4kWh 48V Lithium Battery Interface Definitions

1. Power Switch
2. Ground Connection Point
3. Positive Socket
4. Negative Socket
5. SW(battery wake/sleep switch)
6. SOC
7. ALM
8. RUN
9. CAN/485
10. Dry Contact
11. ADD

Mounting Methods

Dyness 2.4kWh 48V Lithium Battery

Battery Management System (BMS)

Dyness 2.4kWh 48V Lithium Battery

Voltage Protection

Dyness 2.4kWh 48V Lithium Battery

Low Voltage Protection in Discharging 

• When any battery cell voltage or total voltage is lower than the rated protection value during discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm sound.
• Then battery system stops supplying power to the outside. When the voltage of each cell back to rated return range, the protection is over.

Over Voltage Protection in Charging

• Battery will stops charging when total voltage or any battery cell voltage reaches the rated protection value during charging stage. When total voltage or all cell back to rated range, the protection is over.

MORE ABOUT DYNESS

Dyness owns the most sophisticated team with top class R&D experts from the industry. We devote ourselves to responsible engineering of the safest, greenest possible future for you and your family.

Our Powerbox stores excess power produced from solar in daytime, it can be used at night to increase greater energy self sufficiency and security, or used at peak time to reduce household electric charges. Dyness brings our latest Battery Energy Storage System (BESS) Powerbox to Australia at affordable price and top class quality.

Dyness’s mission is to facilitate a healthier energy chain at reasonable cost,consumers and utilities could all get out of the conventional fuels that hurt our planet,where in stead,the clean energy takes charge.

Let’s start using the sunshine by schedule!

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