Item Specification
Product Name: DNK-LTB4S4PC21 14.8V 20Ah
BATTERY SPECS:
Type: Lithium battery pack
Specification: 14.8V 20Ah
Chemistry: Li-ion
Charge: 4.2V ≤ 5 A (can be customized)
Discharge: 14.8V ≤10 A (can be customized)
BMS: 10A(Can be changed)
Dimension: 88*88*6-78mm(can be customized)
Cycle Life: 500(80%)
Weight: 1418.4g
Charge Temperature: 0~45ºC
Discharge Temperature: -20~60ºC
Storage Temperature:
1 year: -20~25°C
3 months: -20~45°C
1 month: -20~60°C
1.Don’t disassemble or modify the battery
DNK battery pack is packaged by Aluminum laminated plastic film which is easy to be damaged by sharp edge such as pin, needle, edge of devices like nickel tabs, etc. If they have serious damage, electrolyte leakage, short-circuit between positive and negative tabs, etc. It would cause the generation, smoke, rupture, or flaming with mishandling.
2.Don’t incinerate or heat the battery pack
Don’t use or leave battery nearby fire, stove or heated place (more than 130℃). These occur the melting of insulator, damage of safety function, or ignition on electrolyte. In case that separator made of polymer is melted by high temperature, the internal short-circuit occurs in individual cells and then it would cause the generating, smoke, rupture or flaming.
3.Don’t use any damage battery pack
Don’t use the battery that are dented or bent on their edge part. DNK batteries are possible to be damaged by strong mechanical shock and it would cause wire break, short-circuit inside the cell, leakage of electrolyte, etc.
4.Don’t drive a nail into a battery pack, strike it by hammer, or tread it.
As the battery might be broken or deformed and then it will be short-circuited, it would cause the generating, smoke, rupture or flaming.
5.Don’t give battery pack impact or fling it
If the battery is broken, the battery will be charged at abnormal voltage or current and abnormal chemical reaction will occur. It may cause the generating, smoke, rupture or flaming.
6.Don’t make the direct ultrasonic wave power to the battery or soldering near the battery
It may cause serious damage to the batteries. Soldering near the battery may cause damage of the components, such as separator and insulator, are melted by heat, it would cause the gas generating, smoke, rupture or flaming.
7.Don’t use battery nearby the high temperature place or under the blazing sun.
DNK batteries have possibility to be degraded its performance such as capacity, thickness increase, impendence, etc. The battery will be charged at the abnormal chemical reaction occurs in the high temperature place. The thickness change may lead to stressing on battery case/ device, wiring or cell which may have possibility to lead to damage performance.
8.Don’t use the unspecified charger.
If the battery is charged with unspecified condition, there are causes that it will be overcharged or the abnormal chemical reaction will occur in cells. It causes the gas generating, smoke, rupture or flaming.
9.Don’t reverse polarity (and terminals)
On charging, the battery is reversed-charged and abnormal chemical reaction occurs. There may be case that unexpected large current flows on discharging. There causes the generating, smoke, rupture or flaming.
10.Don’t reverse-charge or reverse-connect
The battery has polarity. In case the battery is not connected with charger or equipment smoothly do not force them to connect and do check polarity of battery. If the battery is connected to opposite polarity with charger. It will be reverse-charged and abnormal chemical reaction will occur. It would cause the generating, swelling, smoke, rupture or flaming.
11.Don’t connect battery to the plug socket or car-cigarette-plug
Added high voltage to the battery, the excessive current will flow in it and then it may cause the generating, swelling, smoke, rupture or flaming.
12.Don’t use battery for another equipment
If the battery is used for unspecified equipment, it will deteriorate its performance and cycle-life.
13.Don’t touch a leaked battery directly
In case the leaked electrolyte gets into eyes, wash them with fresh water as soon as possible without rubbingeyes. And then, see a doctor immediately. If leave damaged eyes undone, it will cause eye-trouble.
14.Keep the battery away from babies
Keep the little battery out of the reach of babies in order to avoid troubles by swallowing. In case of swallowing the battery, see a doctor immediately.
15.Don’t get into a microwave or a high pressure container
Because of sudden heat or damage of sealing condition of battery, it may cause the generating, smoke, rupture or flaming.
16.Don’t use a leaked battery nearby fire
If the liquid leaks from the battery (or the battery gives out bad smell), let the battery leave from flammable objects immediately. Unless do that, the electrolyte leaked from battery may catch fire and it would cause the smoke, flaming or rupture of it.
17.Don’t use an abnormal battery, such as leakage, swelling, deformation, etc.
In case the battery has bad smell, it generates, its color change or it is warped in using (includes charging and storage), let it take out from equipment or charger and do not use it. If an abnormal battery is used, it may generate bad performance or damage the device or pack.
Q: What is the total energy capacity of the 14.8V 20Ah battery pack?
A: The total energy is 296Wh. This provides a significant power reserve for high-drain devices compared to standard 12V lead-acid batteries.
Q: What is the voltage range of this 4S (4-series) battery pack?
A: The nominal voltage is 14.8V. The operating voltage typically ranges from 12.0V (fully discharged) up to 16.8V (fully charged). Please ensure your device is compatible with a 16.8V peak voltage.
Q: What kind of charger should I use for this 14.8V battery?
A: You must use a dedicated Lithium-ion charger with a 16.8V output. We recommend a charging current of 4A to 10A (0.2C to 0.5C) for optimal battery health. Never use a lead-acid battery charger as it lacks the correct CC/CV charging profile.
Q: Does it have a built-in BMS? What are its functions?
A: Yes. Every DNK battery pack includes a sophisticated BMS (Battery Management System). It provides critical protection against:
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Over-charge (> 16.8V)
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Over-discharge (< 12.0V)
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Over-current and Short-circuits
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Cell balancing to ensure all 4 series stay at the same voltage level.
Q: How long will this battery run my device?
A: You can calculate the runtime using this formula: Runtime (Hours) = 296Wh / Device Power Consumption (Watts). For example, if your device consumes 50W, the battery will last approximately 5.9 hours.
Q: What is the maximum continuous discharge current?
A: Our standard 20Ah pack supports a 20A (1C) continuous discharge. If your application (like a high-torque motor) requires a higher burst current, please let us know; we can customize the BMS to support 40A or higher.
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