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29.4V 45A Battery Charger

Wholesale 29.4V 45A battery charger which manufactured by Starwell factory, delivers powerful, fast, and intelligent charging for 24V lithium systems, combining high efficiency, global compatibility, and advanced safety protection for industrial and EV applications.
Features:
High Output Capacity: Supports up to 300AH, 250AH, 240AH, 200AH lithium and lead-acid batteries.
Versatile Charging: Compatible with various electric vehicles including scooters, electric bikes, and professional and industrial applications.
Efficient Power Supply: Delivers stable power within the range of 12V to 72V, supporting 20-50A output current.
Safe and Reliable: Equipped with CE and ROHS certifications ensuring quality and safety.

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Product Details

As a professional manufacturer in China, Starwell would like to provide you quality 29.4V 45A battery charger, which is engineered to meet the demanding needs of modern energy systems. Designed specifically for 24V lithium battery packs (7S), this high-power charger ensures fast, stable, and safe charging performance across a wide range of industrial and commercial applications.

With advanced high-frequency switching technology and active PFC, it achieves excellent energy efficiency while maintaining reliable operation under varying input conditions worldwide.

What is a 29.4V 45A battery charger?

This 29.4V/45A high-power battery charger is a professional charging solution tailored for 24V lithium battery packs, delivering stable 29.4V output and 45A high current to support fast and efficient charging. Adopting advanced high-frequency switching technology with active PFC, it works with 100–240V global input, features high energy conversion efficiency and low power consumption, and meets industrial and commercial usage demands.

Key Features

1. High Power & Fast Charging

Delivers 29.4V stable output with up to 45A current

Supports fast charging for 200AH–300AH battery capacity

Significantly reduces downtime for electric vehicles and equipment

2. Intelligent 4-Stage Charging Technology

Pre-charge → Constant Current → Constant Voltage → Float Charge

Optimizes charging efficiency while protecting battery lifespan

Automatically switches modes for safe and full charging

3. Wide Compatibility & Versatility

Suitable for electric scooters, e-bikes, AGVs, cleaning machines, and marine systems

Supports 12V–72V range with 20–50A flexibility

Ideal for both industrial and commercial energy solutions

4. Global Input & Energy Efficiency

Universal input: 100–240VAC, 47–63Hz

High efficiency: up to 90% at 200VAC

Power factor >0.9, reducing energy loss

Product Application

· Electric vehicle manufacturers and service providers

· Industrial equipment operators

· Energy storage system integrators

· Marine and off-grid power users

It is especially suitable for professionals who need fast charging, stable performance, and reliable safety features in demanding environments.

It uses an intelligent four-stage charging logic: pre-charge, constant current, constant voltage, and float charge, which effectively extends battery life while ensuring full charging. Built-in full protection mechanisms include over-voltage, over-current, over-temperature, short-circuit, and reverse-polarity protection, enhancing operational safety and reliability. The charger supports automatic power-off upon full charge, freeing users from manual monitoring.

With a rugged, compact structure and good heat dissipation, it is suitable for electric vehicles, industrial cleaning machines, energy storage systems, AGVs, and marine equipment. It complies with international safety certifications and supports customized connectors and labeling. Combining high efficiency, stability, and durability, this charger is an ideal choice for medium-to-large capacity 24V battery systems.

Model		S2500V294A450
Matched Battery	Battery Type	Li-ion Battery
	Series of cells	7S
	Nominal voltage of single cells	3.7V
	Max. voltage of single cells	4.2V
	Nominal voltage of battery pack	24V
	Max. voltage of battery pack	29.4V
Charging Mode		CC/(Load meter test CV mode）
Heat Sinking Method		Forced ventilation with fan
Input	Range of Input Voltage	100~240VAC
	Range of Input Frequency	47-63Hz
	Power Factor	PF>0.9/240VAC(Full load)
	Efficiency	87% min.@100VAC/90% min.@200VAC
	Input AC Current	11Amax. @200Vac input & Full load
	Inrush current	60A@Cold Start
Output	Rated Voltage	29.4V
	Rated Current	45A±5%（AC：200V～240V） 22.5A±5%（AC：100V～120V）
	Rated Power	1323W（AC：160V～264V）661.5W（AC：100V～120V）
	Voltage Precision	±0.2V
	Line Regulation	1%
	Load Regulation	5%
	Dynamic Load	The power supply should keep the output voltage within 5% , when the output current changes from 25% to 70% load and back to 25% load and 0.5A/us slew rate and transient time with 200ms.
	Capacitive Load Test	100~240VAC, Full load, parallel connected with 2200uF capacitor. One way is that power on and connect the load, and the other way is that connect the load firstly and then power on. The output voltage wave by the two ways must be ascending directly without surge up and down.
	Maximum Current for Fully Charged LED Indicator（RED LED to GREEN LED）	≤10%*Rated Current
Model		S2500V294A450
Matched Battery	Battery Type	Li-ion Battery
	Series of cells	7S
	Nominal voltage of single cells	3.7V
	Max. voltage of single cells	4.2V
	Nominal voltage of battery pack	24V
	Max. voltage of battery pack	29.4V
Charging Mode		CC/(Load meter test CV mode）
Heat Sinking Method		Forced ventilation with fan
Input	Range of Input Voltage	100~240VAC
	Range of Input Frequency	47-63Hz
	Power Factor	PF>0.9/240VAC(Full load)
	Efficiency	87% min.@100VAC/90% min.@200VAC
	Input AC Current	11Amax. @200Vac input & Full load
	Inrush current	60A@Cold Start
Output	Rated Voltage	29.4V
	Rated Current	45A±5%（AC：200V～240V） 22.5A±5%（AC：100V～120V）
	Rated Power	1323W（AC：160V～264V）661.5W（AC：100V～120V）
	Voltage Precision	±0.2V
	Line Regulation	1%
	Load Regulation	5%
	Dynamic Load	The power supply should keep the output voltage within 5% , when the output current changes from 25% to 70% load and back to 25% load and 0.5A/us slew rate and transient time with 200ms.
	Capacitive Load Test	100~240VAC, Full load, parallel connected with 2200uF capacitor. One way is that power on and connect the load, and the other way is that connect the load firstly and then power on. The output voltage wave by the two ways must be ascending directly without surge up and down.
	Maximum Current for Fully Charged LED Indicator（RED LED to GREEN LED）	≤10%*Rated Current
Model		S2500V294A450
Matched Battery	Battery Type	Li-ion Battery
	Series of cells	7S
	Nominal voltage of single cells	3.7V
	Max. voltage of single cells	4.2V
	Nominal voltage of battery pack	24V
	Max. voltage of battery pack	29.4V
Charging Mode		CC/(Load meter test CV mode）
Heat Sinking Method		Forced ventilation with fan
Input	Range of Input Voltage	100~240VAC
	Range of Input Frequency	47-63Hz
	Power Factor	PF>0.9/240VAC(Full load)
	Efficiency	87% min.@100VAC/90% min.@200VAC
	Input AC Current	11Amax. @200Vac input & Full load
	Inrush current	60A@Cold Start
Output	Rated Voltage	29.4V
	Rated Current	45A±5%（AC：200V～240V） 22.5A±5%（AC：100V～120V）
	Rated Power	1323W（AC：160V～264V）661.5W（AC：100V～120V）
	Voltage Precision	±0.2V
	Line Regulation	1%
	Load Regulation	5%
	Dynamic Load	The power supply should keep the output voltage within 5% , when the output current changes from 25% to 70% load and back to 25% load and 0.5A/us slew rate and transient time with 200ms.
	Capacitive Load Test	100~240VAC, Full load, parallel connected with 2200uF capacitor. One way is that power on and connect the load, and the other way is that connect the load firstly and then power on. The output voltage wave by the two ways must be ascending directly without surge up and down.
	Maximum Current for Fully Charged LED Indicator（RED LED to GREEN LED）	≤10%*Rated Current

	Ripple and Noise	≤2000mV Ripple & Noise: Measurement is done by 20MHz bandwidth oscilloscope and the output paralleled a 0.1uF ceramic capacitor and a 10uF electrolysis capacitor. (test under the condition of rated input and rated output)
	Standby Power	≤20W
	Turn on Time	5S/220VAC (Full load)
	Rise Time	< 30ms
	Communication Protocol	/
Protection	Short Circuit	The power / battery is properly connected.
	Over Current /Over Load/Under voltage	After the abnormal conditions are lifted, the normal operation can be resumed.
	Over Voltage	When the output voltage exceeds 1.05-1.3 times of the rated voltage, the power supply will be protected and normal operation after abnormal conditions are lifted.
	Over Temperature	When the temperature of the transformer core exceeds 85 ° C, the output of the charger drops to half the current. After the temperature drops, it can recover on its own.
Environment	Operating Temperature	-25℃~+45℃
	Operating Humidity	10~95%RH, 10~95%RH, no condensation.
	Drop Tests	1 Corner, 3 Edges, 6 Surfaces, Height: 100cm, On the hardwood board, the plug can be bend, and scratch, but the structure should not be damaged, and can work normally.
	Storage Temperature、 Humidity	-40℃~+80℃，10~95%RH
	Operating Altitude	2000m
	Non-Operating Altitude	10000m
	Operating Vibration	Vibration:1.0G(Amplitude), 5~20~500Hz(Frequency), 30Minutes per cycle for each axis(X,Y,Z).

FAQ

1. Are you a manufacturer or a trading company?

We are a manufacturer with 8 years of experience in the power supply, power adapter, and charger field.

2. Are your products full current and full power?

Yes. We do not provide non-full current or non-full power products to our customers.

3. Are your products safe?

Yes. First, our materials are new and fireproof. In addition, our products are approved with international certificates including CE, ROHS, UL, FCC, TUV, GS, PSE, KC, CB, and BSMI.

4. What is your MOQ?

500 pieces.

5. What is your product warranty policy?

One year.

6. What is the delivery time?

For sample orders: 2–3 working days after confirmation.

For bulk orders: generally 7–15 working days after confirmation, with the exact delivery time depending on your order quantity.

7. What services can you offer?

OEM and ODM orders are welcome.

8. What are your payment methods and trade terms?

We accept TT, PayPal, and Western Union. For bulk orders, payment terms are 30% as a deposit and 70% paid off before shipment.

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