Can the flashing screen be turned off when charging?

Long press the left and right keys at the same time.

Unit appears to go to sleep mode, meaning there is no display at all with voltage applied. button press turns on the device then works ok. Fix for it?

When the battery is neither charging or discharging the screen turns off. When not connected to the grid, which is the usual case with me, generally the screen will go dark around sunset or sunrise when the demands from my RV equal the power produced by my solar panels. When connected to the grid and my battery disconnected from the RV, the screen will be dark half the time. It lights up when my Morningstar charger decides my battery needs a modest "topping off." It should be noted that the screen goes dark even when the charger is in float mode, the current being so modest as to be almost undectable.

how long has anyone extended their display cable

I added 15ft to my original 13ft cable using CAT5 cable - just cut the existing cable in half and soldered the CAT5 in the middle. The original cable has a shield wire that connects to one of the pins; my CAT5 cable didn't have a shield but I combined the four white wires in the CAT5 and used that combined wire to connect to the shield wire. That left 4 wires in the CAT5 to connect to the remaining 4 wires of the original cable. The result worked fine.

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Battery Capacity Tester, Battery Monitor, Voltage Range 8V-80V and 0-100A Sampler base, with 6.5ft / 2m Custom Cable, for Auto Car Motor Boat Caravan RV

Product ID: 318372905

Details

Brand
QWORK
Colour
Black
Item weight
250 Grams
Power source
Corded
Style
Voltage

⚡8V-80V voltage range

📏6.5ft custom cable for flexible setup

🔋0-100A high precision current detection

€ 84.40

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

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Description

🔋 Stay Powered, Stay Ahead — Never Get Caught Off Guard!

DATA YOU CAN TRUST - Automatically saves your last test data so you never lose track of your battery health.
PRECISION POWER INSIGHT - Monitor your battery’s voltage, current, and capacity with pinpoint accuracy.
VERSATILE COMPATIBILITY - Perfect for cars, boats, RVs, e-bikes, and more—one tester for all your power needs.
CRYSTAL CLEAR LCD DISPLAY - Large backlit screen shows all vital battery stats at a glance, day or night.
FUEL GAUGE FOR YOUR BATTERY - Instantly read battery condition like a fuel gauge to avoid unexpected power failures.

The QWORK® Battery Capacity Tester offers high-precision monitoring of voltage (8V-80V) and current (0-100A) with a large backlit LCD for easy reading. Its 6.5ft custom cable ensures flexible installation across a wide range of vehicles and portable equipment, including cars, boats, RVs, and e-bikes. Designed to store your last test data automatically, it’s the essential tool for proactive battery management and peace of mind on the go.

Specifications

ASIN	B08HWFPGL5
Best Sellers Rank	93,539 in Automotive ( See Top 100 in Automotive ) 102 in Car Battery Testers
Brand	QWORK
Colour	Black
Compatible Devices	car, recreational_vehicle, boat, e-bike, RV, caravan, motor, cleaning_machine
Country Of Origin	China
Customer Reviews	4.3 4.3 out of 5 stars (348)
Item Weight	250 Grams
Manufacturer	QWORK
Manufacturer Part Number	WD3941
Maximum Operating Voltage	80 Volts
Measurement Type	Voltmeter
Minimum Operating Voltage	8 Volts
Model Number	WD3941
Number of Items	1
Power Source	Corded Electric
Specification Met	Specifications Met
Style Name	Voltage
UPC	792332966894
Unit Count	1.0 count

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Excellent communication throughout the order process. Product is perfect.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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€ 84.40

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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