Today the ac power adapter starting making a loud whining sound, from the ac adapter's fan. it was always silent before today. worried, anybody else?

This is normal operation and has done the same with mine. Whenever the temp inside the power supply reaches a level which it determines needs to be cooled, it will increase the speed of the internal fan to lower the temp. This may happen for any number of reasons any of which can happen without you having done anything with batteries or power supplying. Hope this helps.

Does anyone have any info on how to contact the company for warranty issues?

Just go to "returns and orders" on Amazon, look up the order, then contact seller. I found them to be very responsive.

How long does discharging usually take? Does it discharge all 4 batteries at once?

Less than 90 minutes, all four batteries

Ruined 3 dji batteries in 6 months mav pro 2 purchased in december 2020?

Mine is working great 4 batteries at once..did you have it on discharge? If you allow batteries to discharge fully.. It ruins them

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Hanatora Mavic 2 Zoom/Pro Battery Wall & Car Charger for DJI Mavic 2 Zoom/Pro Drone,5 in 1 Charging Hub with Charging,Discharging,Storage Charging

Hanatora Mavic 2 Zoom/Pro Battery Wall & Car Charger for DJI Mavic 2 Zoom/Pro Drone,5 in 1 Charging Hub with Charging,Discharging,Storage Charging

Product ID: 163927790

Details

Brand
Hanatora
Color
Platinum
Item Weight
1.6 Pounds
Output Voltage
17.6 Volts
Specification Met
FCC CE UL

⚡6A max output current

🔋5-in-1 multi-mode charging hub

🚗Dual wall & car charger support

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C$8553

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Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power up like a pro — never miss a flight with Hanatora’s all-in-one Mavic 2 charger!

VERSATILE POWER OPTIONS - Seamlessly switch between AC home power and DC car adapter for charging anytime, anywhere.
RAPID 4 BATTERY CHARGING - Charge up to 4 Mavic 2 batteries plus remote simultaneously in just 100-120 minutes.
PROLONG BATTERY LONGEVITY - Discharge batteries to 0% after 20 cycles and store at 50-60% charge to maximize drone uptime and investment.
REAL TIME DIGITAL DISPLAY - Stay informed with an intuitive LED screen showing charging status, current, and voltage at a glance.
SMART BATTERY HEALTH MODES - Optimize battery lifespan with dedicated charging, discharging, and storage modes that balance cells perfectly.

The Hanatora Mavic 2 Zoom/Pro Battery Charger is a premium 5-in-1 charging hub designed exclusively for DJI Mavic 2 series batteries. It supports simultaneous charging of up to 4 batteries plus a remote, with smart modes for charging, discharging, and safe storage to extend battery life. Compatible with both AC home outlets and DC car power, it features a clear digital display and delivers a powerful 6A output for rapid, balanced charging. Ideal for drone professionals and enthusiasts who demand efficiency and battery longevity on the go.

Specifications

ASIN	B07Y9V4GTR
Amperage	6 Amps
Battery Charge Time	120 minutes
Best Sellers Rank	#177,998 in Toys & Games ( See Top 100 in Toys & Games ) #464 in RC Battery Chargers
Brand	Hanatora
Color	Platinum
Current Rating	6 Amps
Customer Reviews	4.5 out of 5 stars 739 Reviews
Input Voltage	240 Volts
Item Weight	1.57 Pounds
Manufacturer	Hanatora
Mfr Part Number	MAVIC2-024-05
Number of Ports	5
Output Voltage	17.6 Volts
Specification Met	FCC, CE, UL
UPC	682141787936

Reviews

M**Y

17.01.2022

B**R

24.01.2020

D**D

6.03.2020

L**N

6.07.2025

D**N

24.02.2021

J**R

25.04.2026

S**R

14.12.2023

V**A

22.08.2020

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