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Compact black battery tester with LCD display and anti-slip finish

DLYFULL B2 Black Battery Tester DB1

SKU CH-BQRE-FQWVJ

Tests AA, AAA, C, D, 9V and button cells, showing poor, weak or good voltage on an LCD screen

  • Team affiliation1 Piece
  • Key featuresBattery Powered, false
  • Product weight0.02 lb (0.01 kg)
  • Product typeVoltmeter
  • Tests AA AAA C D 9V button cells instantly
  • LCD shows poor weak good voltage status
  • Powered by included AAA battery no recharging
  • Compact 0.02 lb pocket size anti-slip grip
  • CE RoHS FCC certified 18-month warranty support

Universal Battery Tester B2

The DLYFULL B2 Black DB1 checks voltage on common cylindrical cells such as AA, AAA, C and D as well as 9V and button types. It is aimed at households and technicians who need a quick way to sort good cells from dead ones without guesswork.

Pocket-sized checker for loose cells

The unit runs on a single AAA battery that is supplied in the box, so no mains adapter is required. Its compact chassis and anti-slip finish let you test batteries anywhere, freeing up bench space and eliminating the need to hunt for a working device just to verify charge.

Replaces trial-and-error device testing

Instead of inserting each cell into a radio or toy to see if it works, the LCD shows poor, weak or good status in seconds. The jump is worth it when you have drawers of mixed batteries and want to stop wasting time and avoid damaging cells by recharging non-rechargeables.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $31.99
Typical for this category: the median of 971 items is $30.99.

Specifications

Product
Brand nameDLYFULL
Product typeVoltmeter
Size & build
Product weight0.02 lb (0.01 kg)
More details
Team affiliation1 Piece

Questions about this item

How long does the included AAA battery last before the tester itself needs a replacement?

The unit ships with one AAA battery installed; typical alkaline life is measured in months of intermittent checks, and the tester draws no power when idle.

Does the LCD backlight or the test circuit make the device warm during a full day of checking dozens of cells?

No active backlight or heating element is present; the tester remains at room temperature even after continuous use.

Which battery types require an adapter or holder that is not supplied with the tester?

All listed cylindrical and button cells fit directly into the built-in contacts; no extra adapters are needed.

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