NEXPEAK NC350 35Amp Automatic Smart 12V And 24V Battery Charger User Guide

NEXPEAK NC350 35Amp Automatic Smart 12V And 24V Battery Charger

Technical Specifications

• AC Input Voltage: 100-240V 50/60HZ
• Battery: Lithium, LiFePO4, Lead-acid(AGM, GEL, SLA, Flooded, WET, EFB,etc.)
• 12V Charge Current: Max 35A
• 24V Charge Current: Max 18A
• Minimum Start Volt Input: >2.0V
• Power with Load: Max 450W
• Battery Type Selection: MODE button with 3 levels to choose: 10A-20A-35A
• Net Weight: 1000g
• Dimension: 230x125x70mm

Product Usage Instructions

Step 1: Connect the charger with the battery

Connect the charger to the battery using the red positive and black negative terminals.

Step 2: Choose the charging current

There are 3 levels of charging current to choose from:

• Low: 12V/10A or 24V/5A
• Medium: 12V/20A or 24V/10A
• High: 12V/35A or 24V/18A

Select the appropriate level depending on the desired charging speed. Higher levels will result in faster charging.

Step 3: Connect the charger with the outlet

Connect the charger to the power outlet. The AC input voltage should be within the range of 100-240 volts.

Step 4: Select the battery type

The NC301 charger has 4 battery modes: LITHIUM, AGM/LEAD,  LiFePO4, and REPAIR. Press the MODE button to switch to the corresponding battery type. Note: It is important to follow the correct steps for connection to avoid sparks and potential damage to the battery.

Estimated Charging Time For Different Battery Capacities

FAQ

Q: Can I use the charger with a frozen battery?

A: No, do not attempt to jump start a damaged or frozen battery with this product.

Q: Is it safe to cover the product while it is operating?

A: No, do not cover the product as it emits heat and can cause burns.

Q: What should I do if battery acid comes into contact with my eyes or skin?

A: In the case of contamination of eyes or skin, flush the affected area with running clean water and contact poison control immediately.

Q: Can I use the charger with any type of battery?

A: The charger is compatible with Lithium, LiFePO4, and various types of Lead- acid batteries (AGM, GEL, SLA, Flooded, WET, EFB, etc.).

Q: How do I choose the correct charging current?

A: The charger offers 3 levels of charging current: Low, Medium, and High. Select the appropriate level based on the desired charging speed and the battery’s specifications.

Q: What should I do if there are sparks during connection?

A: If there are sparks, disconnect the charger immediately and check the connection to ensure it is correct. Sparks could indicate a faulty connection that could damage the battery.

Q: Can I use the charger in a poorly ventilated area?

A: No, it is recommended to operate the product in well-ventilated areas to prevent any build-up of explosive gases.

Q: Can I use the charger in wet conditions?

A: No, do not submerge the product in water or get it wet. It is an electrical device and can cause electrical shock.

For more information and support contact: support@nexpeaktech.com

DANGER

READ AND UNDERSTAND ALL SAFETY INFORMATION BEFORE USING THIS PRODUCT. Fallure to follow these safety Instructions may result In ELECTRICAL SHOCK, EXPLOSION, FIRE, which may result in a SERIOUS INJURY, DEATH, or PROPERTY DAMAGE.

• Electrical Shock. Product is an electrical device that can shock and cause serious injury. Do not cut power cords. Do not submerge in water or get wet.
• Explosion. Unmonitored, incompatible, or damaged batteries can explode if used with the product. Do not leave the product unattended while in use. Do not attempt to jump-start a damaged or frozen battery. Use product only with batteries of recommended voltage. Operate product in well ventilated areas.
• Fire. The product is an electrical device that emits heat and is capable of causing burns. Do not cover the product. Do not smoke or use any source of electrical spark or fire when operating product. Keep product away from combustible materials.
• Eye Injury. Wear eye protection when operating the product. Batteries can explode and cause flying debris. Battery acid can cause eye and skin irritation. In the case of contamination of eyes or skin, flush affected area with running clean water and contact poison control immediately.
• Explosive Gases. Working in the vicinity of a lead-acid is dangerous. Batteries generate explosive gases during normal battery operation, To reduce risk of battery explosion, follow all safety information instructions and those published by the battery manufacturer and manufacturer of any equipment intended to be used in the vicinity of battery. Review cautionary markings on these products and on engine.

Technical Specifications

How To Use

• STEP1
  • Connect the charger with the battery (red positive and black negative)
• STEP2
  • Choose the charging current, 3 levels to select: Low(12V/10A; 24V/5A), Medium(12V/20A; 24V/10A) High(12V/35A; 24V/18A), the higher level of output amps will get faster-charging speed.
• STEP3
  • Connect the charger with the outlet, AC input voltage from 100-240 volt.
• STEP4
  • NC301 charger has 4 battery modes: LITHIUM, AGM/LEAD, LiFePO4 and REPAIR. Press the “MODE” button to switch the corresponding battery type.

NOTE: Please follow the right steps to connect or it will have sparks and could damage your battery.

Estimated Charging Time For Different Battery Capacities.

Battery Capacity (Ah)

| Charging Time(H)
---|---
12V 10A| 12V 20A| 12V 35A| 24V 5A| 24V 10A| 24V 18A
50(Ah)| 3.5 H| /| /| 6.5 H| 3.5 H| /
120(Ah)| 7.5 H| 4.2 H| /| 15 H| 7.5 H| 4.5 H
150(Ah)| 9.5 H| 5.0 H| 3.0 H| 19 H| 9.5 H| 6.0 H

200(Ah)

| ****

12.5 H

| ****

6.5 H

| ****

3.5 H

| ****

/

| ****

12.5 H

| ****

7.0 H

400(Ah)| 25 H| 12.5 H| 8.0 H| /| 25 H| 15 H
1000(Ah)| /| 38 H| 22 H| /| /| 42.5 H

The estimated charging time is for reference only, please refer to the actual time.

Mode /Explanation

• Suitable for charging 12V and 24V Lithium batteries, for batteries used on Battery Management Systems(BMS) only.
• Suitable for 12V and 24V ordinary lead-acid batteries/maintenance-free batteries including AGM, GEL, SLA, WET, DEEP CYCLE, EFB, Calcium, etc.
• Suitable for charging 12V and 24V LiFePO4 Lithium batteries or motorcycle Lithium batteries.
• For battery maintenance or activate the battery. Leave the battery unused for a long time, old or cannot be charged batteries. (Not all batteries can be repaired)

Important Safety Warnings

1. For 12V & 24V Lithium, Lead-acid, LiFeP04 batteries’ charging only, do not attempt to use product with any other type of battery. Charging other battery chemistries may result in injury, death or property damage.
2. CAN NOT charge totally dead batteries, do not charge a battery if you are unsure of the battery’s specific chemistry or voltage.
3. This battery charger is not waterproof.
4. Contact us for replacement if you found the charger is abnormal or the plug and power clips are damaged or cracked.
5. Stop charging if the battery is damaged or liquid overflow around your battery.
6. Keep ventilation to prevent flames and sparks, do not expose to the sun, or in a high-temperature environment.
7. Do not put the charger on the battery while charging, avoid any metal tool dropping on the battery. It might spark or short-circuit the battery which may cause an explosion
8. Remove personal metal items such as rings, bracelets, necklaces, watch when charging the lead-acid battery.
9. Unplug the charger from AC outlet before doing any maintenance or cleaning to reduce the risk of electric shock.

Screen Definition

• Repair Mode
• Test Mode
  • Auto enters battery test to check whether the battery is fully charged after the stage-4 absorption charging is finished.
• Wrong polarity, please change the connection of the clamps.
• Defective battery, purchase a battery tester to diagnose, we suggest an Amazon KONNWEI battery tester.
• Bad connection, please check the connection between the charger and the battery.

Stage Charging

NOTE: Trickle charging is specially designed for lead-acid batteries— keep charging and maintain batteries after fully charged. For Lithium and LiFePO4 batteries will auto shut-off(stop charging) after fully charged .

1. Battery desulfation
2. Soft start charging
3. Bulk charging
4. Absorption charging
5. Trickle charge
6. Battery test
7. Recondition charging
8. Monitor and Analysis
9. Float & Maintenance Charging

Intelligent Memory

The battery charger has a memory function that remains the last charging mode after the new start.

TEMP Compensation

1. Winter ( ): 0-10℃ Summer ( ): >28℃ Normal Temperature: 10-27℃
2. During the charging process, the charger will automatically detect the environment and working temperature， automatically adjust the best charging status to protect the battery life and ensure safe charging.
3. Detect the temperature and adjust every 3-5 seconds, there will be a very slight deviation but won’t affect the entire charging process.

Maintain/Repair

NOTE: For activation or maintenance of weak, old and idle batteries. Can not repair severely damaged batteries. Not for Lithium and LiFePO4 batteries.

1. Connect the battery with AC plug and switch to repair mode, the screen displays “PUL” and ( ) flashes.

2. Usually car batteries requires about 4 hours under repair mode, and 2 hours for the motorcycle batteries and wet batteries. (You could keep the battery in repair mode if the battery is not overheated until the proper Status of Health index is reached).

3. It has current input into the battery during the repair mode and will charge the battery after a long time repair process.

4. If you need to stop the repair process in advance, just remove the charger’s clips and disconnect the power.
   CAUTION: STOP repair mode immediately If the battery has serious heating or burning smell! (The main reason is due to the battery internal was vulcanized and lack of water, please replace battery asap).

5. Not all batteries can be repaired, only can use on motorcycle and car batteries.

Troubleshooting

1. The screen does not display when the charger is connected to the battery. Reason: The positive and negative clips are connected incorrectly or the battery is dead.
   • Solution: Check whether the clips are connected reversed, use a battery tester to see whether the battery is dead or not.
2. The battery can’t be charged and is low current, but the screen display (FUL) indicates fully charged.
   • Reason: This is caused by the battery’s vulcanization and inside lack of water, low voltage or leaving it unused for a long time. The internal resistance of the battery and capacity will reduce greatly, Then it will reach full voltage quickly while charging.
   • Solution: Choose repair mode and try to reactivate the battery, if the same situation still happens, purchase a battery tester to diagnose it.
3. Can’t fully charged after a long time.
   • Reason: battery vulcanization or lack of water also low voltage can lead to this situation, the battery will become hot while charging.
   • Solution: Stop charging. Check whether the battery liquid leaked if it’s a wet battery.
4. Can’t automatically sense it’s on a 24V battery, hooked up to 24V batteries, but stays in 12V mode, and says full.
   • Reason: 24v battery contains two of 12V batteries, its real voltage could be 8-10v for long time of power loss, so the battery charger will charge it in 12V battery mode and in this way can’t charge the 24V batteries successfully.
   • Solution: Charge two of the 12V battery separately and it will turn to 24V mode after charging to a certain voltage then charge 24V batteries.
5. Tried charging a battery overnight for over 8 hours and no charge at all, kept blinking the battery percentage icon all night long.
   • Reason: battery charger can not charge totally dead batteries(0V or bad cells contained).
   • Solution: try repair function or replace this battery directly.

Warranty

2 Year Hassle-Free Warranty

NEXPEAK warrants that this product will be free from defects in material and workmanship for a period of two (2) years from the date of purchase (the “Warranty Period” ). For defects reported during the Warranty Period, NEXPEAK will, at its discretion, and subject to NEXPEAK’s technical support analysis, either repair or replace defective products. Replacement parts and products will be new or serviceably used, comparable in function and performance to the original part and warranted for the remainder of the original Warranty Period. NEXPEAK’S LIABILITY HEREUNDER IS EXPRESSLY LIMITED TO REPLACEMENT OR REPAIR. TO THE MAXIMUM EXTENT PERMITTED BY LAW, NEXPEAK SHALL NOT BE LIABLE TO ANY PURCHASER OF THE PRODUCT OR ANY THIRD PARTY FOR ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING, BUT NOT LIMITED.

• Contact us: support@nexpeaktech.com
• Web: www.nexpeaktech.com

References

• NEXPEAK®

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