Maxell - LR44 / AG13 1.5V Alkaline Button Cell Batteries (Card of 10) – Premium High-Density Replacement Cells for Digital Hydroponic pH Pens and Handheld EC Meters

Maxell - LR44 / AG13 1.5V Alkaline Button Cell Batteries (Card of 10) – Premium High-Density Replacement Cells for Digital Hydroponic pH Pens and Handheld EC Meters

Restore continuous micro-electronic power, prevent screen fade, and lock in the measurement stability of your field diagnostics with this professional Card of 10 Maxell LR44 Alkaline Button Cell Batteries. Explicitly compiled to serve as an uncompromised backup power source for commercial vertical indoor farms, high-yield greenhouse facilities, and agricultural field testing technicians, these high-capacity **1.5-volt alkaline button cells** provide stable, low-drain current to sensitive digital processing chips. Handheld instruments like pocket pH testers, electrical conductivity (EC) pens, and digital water testing sticks operate on highly precise internal voltage thresholds. As batteries decay, voltage drop across the circuit can cause subtle software tracking drift, faint LCD readouts, or complete system lockouts right when you need to verify a nutritional mix. This premium pack of ten replacement batteries completely resolves those power infrastructure vulnerabilities. Manufactured by Maxell to strict international industrial standards, these **LR44 (also universally known as AG13, A76, or LR44H) micro-cells** utilize advanced chemical formulas that maximize energy density while resisting cell leakage. Neatly mounted on a heavy-duty card of 10 individual cells for organized storage on your facility's maintenance rack, this collection guarantees your monitoring team always has instant access to fresh, leak-proof replacement power during critical crop cycles.

Best For: Re-powering drained pocket pH pens, swapping fading cells in handheld EC/TDS diagnostic sticks, stocking commercial greenhouse tool chests, and ensuring continuous, drift-free electronic testing telemetry.

Key Features & Technical Advancements

• High-Density 1.5V Output: Delivers a consistent, low-drain voltage profile that keeps your meter's internal microprocessors working within factory-specified power limits.
• Universal Micro-Cell Configuration: Built to the exact dimensional metrics of the standard LR44 casing, ensuring absolute drop-in compatibility across a massive range of diagnostic hardware brands.
• Advanced Leak-Resistant Shell: Engineered with an anti-corrosion outer structural casing to prevent chemical leaks, keeping internal gold contact springs clean and protected.
• Long-Life Storage Architecture: Formulated with highly stable chemical compounds that hold their charge for years on your tool rack, providing reliable emergency backup power when you need it.
• Organised 10-Piece Card Packaging: Keeps all ten cells neatly held in place and visible, avoiding messy tool drawers and preventing accidental short-circuits caused by loose batteries touching.
• Excellent Continuous Delivery: Delivers constant, un-pulsed electronic current to maximize the lifespan of sensitive glass electrode backlight displays and sensor software engines.

Product Technical Specifications Matrix

Advanced Sensor Maintenance & Substrate Control Tips

• Executing a Flawless Battery Replacement and Calibration Routine: When your handheld digital tester shows a fading display or low-battery icon, replace the entire set of cells at the same time—never mix old batteries with fresh ones, as this causes voltage imbalances that shorten cell life. Pop open the top water-resistant battery cap on your pen. Slip out the old cells and use a dry cotton swab to wipe down the gold contact springs to clean away any dust or moisture. Slide in the new Maxell LR44 batteries, making sure the positive (+) flat faces point in the direction shown on the tool's casing. Ensure the rubber O-ring seal sits perfectly inside its track before screwing the cap back down; a misplaced seal allows water to seep into the circuit, ruining the device. Because a change in battery voltage can reset internal software parameters, always run a quick two-point calibration check with reference standard fluids before taking your next reservoir reading.
• Root-Zone Hydration and Substrate Coordination: Keeping your handheld testing wands and electronic dosing systems fully powered ensures your tools read and mix nutrient solutions with total accuracy. For optimal root vitality, accelerated nutrient absorption, and uncompromised drainage, route your perfectly tracked fertiliser recipes into a high-porosity 70/30 blend of Coco Coir and Horticultural Perlite. To maintain highly uniform moisture profiles across your entire bench layout, pressurise your feed lines using a heavy-duty Plont PPH Submersible Pump managed by an automated digital shot-timer.
• The Dangers of Leaving Spent Batteries Inside Testers: Leaving dead batteries inside a handheld meter is a major cause of electronic failure in agricultural tools. When an alkaline battery drains completely, its internal chemistry changes, producing hydrogen gas that creates high pressure inside the casing. Eventually, this breaks the safety seals, letting potassium hydroxide leak out. This corrosive chemical quickly eats through gold contact springs and destroys the main circuit board. If you plan to store a diagnostic pen away for more than a month without use, always take the batteries out first to protect your gear.
• Understanding the Link Between Battery Voltage and Reading Accuracy: Many modern digital pH and EC pens lack built-in voltage regulators, meaning they rely on steady power from the batteries to drive their internal processing logic. As LR44 cells wear down, their output drops below 1.5 volts. This drop can throw off the tool's analog-to-digital converter, leading to slow reading updates, frozen screens, or inaccurate data. Replacing weak batteries before they drain completely ensures your testing gear gets the clean power it needs for fast, accurate measurements.

CRITICAL BUTTON BATTERY SAFETY MANDATE: KEEP BUTTON BATTERIES OUT OF REACH OF CHILDREN. Never allow children to replace button batteries in any device. Swallowing a button cell causes severe internal chemical burns in as little as 2 hours, leading to fatal injuries. If you suspect a battery has been swallowed or inserted into any part of the body, call emergency services immediately or contact the **Australian Poisons Information Centre** on **13 11 26** for expert, 24/7 guidance. Wrap tape around both sides of used cells and dispose of them safely at an approved recycling point immediately.

Ideal For (Uses)

• Handheld Testing Pen Maintenance: The ideal factory-spec replacement battery pack for facility technicians managing Aqua Master Tools, Bluelab, or Hanna pocket diagnostic sticks.
• On-the-Floor Toolkit Stocking: Ideal for commercial greenhouse facility managers who want to keep high-quality replacement cells on their tool racks to minimize system downtime.
• Low-Drain Micro-Device Powering: An exceptional component choice for digital timers, compact scales, temp/humidity sensors, and portable lab equipment requiring stable 1.5V alkaline energy.