【Product Description】
Experience the ultimate in power, efficiency, and convenience with the Smartools 1.5V D Size 12000mWh USB-C Rechargeable Li-ion Battery. Designed as a drop-in replacement for standard D (LR20) batteries, this advanced Li-ion cell delivers an impressive 12000mWh true-rated capacity and a rock-solid 1.5V constant voltage throughout the entire discharge cycle.
Unlike traditional NiMH batteries that fade to 1.2V, the Smartools D cell ensures your gas stove igniters, water heaters, and high-drain flashlights perform flawlessly right up to the last drop of energy. Featuring a convenient built-in Type-C port, it fully recharges in just 4 hours via any standard USB charger. With an outstanding 1200+ cycle life and a built-in 6-layer intelligent protection chip, this battery is not only eco-friendly and cost-saving but also exceptionally safe.
Premium Gift: From a 2-pack upwards, your order comes with a beautiful Leather Storage Case, keeping your batteries organized, dust-free, and ready for action. Available in bulk packs from 1 to 10 pieces.
(Note: 12000mWh is equivalent to 8000mAh at 1.5V nominal voltage.)
【Key Features】
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True 12000mWh High Capacity: Delivers honest, non-exaggerated large capacity, providing significantly longer runtimes for high-drain devices compared to standard cells.
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1.5V Constant Voltage Output: Maintains a steady 1.5V from full charge to empty. Prevents device shutdowns caused by voltage drops, ensuring reliable performance for gas stove igniters and water heaters.
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Built-in Type-C Fast Charging: No external charger needed. Fully recharges in approximately 4 hours using a standard USB-C cable and any USB power source.
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1200+ Eco-Friendly Cycle Life: Reusable over 1200 times, replacing more than 1,200 disposable alkaline batteries, saving you money and reducing waste.
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6-Layer Smart Protection System: Built-in advanced microchip provides comprehensive safeguards against overcharge, over-discharge, short circuits, over-current, over-temperature, and leakage.
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Premium Leather Storage Case (2+ Packs): Keep your batteries organized and protected with the included elegant leather storage case (included for 2-pack and above).
【Parameters & Specifications】
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Brand: Smartools
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Model: D1 (D Size )
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Battery Size: D Size (LR20 )
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Nominal Voltage: 1.5V (Constant)
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Rated Capacity: 12000mWh (equiv. 8000mAh at 1.5V)
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Battery Type: Rechargeable Li-ion (Lithium-ion)
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Terminal Type: Button Top
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Charging Interface: Built-in USB Type-C Port
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Charging Time: ~4 Hours
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Cycle Life: 1200+ Cycles
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Protection Features: Overcharge, Over-discharge, Over-current, Over-temperature, Short-circuit, Leakage protection.
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Dimensions: 32mm (Dia) × 60mm (Height) (Based on standard D1 Type)
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Accessory: Leather Storage Case (Included for 2 or more packs)
【Applications】
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Kitchen Appliances: Gas stoves, gas water heater igniters.
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Lighting & Safety: High-power flashlights, emergency lamps, camping lanterns.
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Home Electronics: Portable radios, boomboxes, remote-controlled toys.
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Outdoor & Emergency: Battery backups for outdoor survival kits and security systems.
【Frequently Asked Questions (FAQ)】
Q1: Why does 12000mWh equal 8000mAh?
A1: mWh measures energy, while mAh measures capacity. Since this battery outputs a constant 1.5V, the calculation is: Energy (mWh) ÷ Voltage (V) = Capacity (mAh). Therefore, 12000mWh ÷ 1.5V = 8000mAh. This is the industry standard for 1.5V Li-ion batteries.
Q2: What does a 1.5V constant voltage do for my gas stove?
A2: Traditional NiMH batteries start at 1.5V but quickly drop to 1.2V. Gas igniters require a higher voltage (above 1.3V) to generate a spark. If the voltage drops below this, your stove won't light even though the battery still has power. Our 1.5V constant voltage guarantees a spark every time until the battery is completely dead.
Q3: Is the charging indicator easy to use?
A3: Yes! There is a built-in LED light on the battery. When plugged into the Type-C charger, a red LED light will flash while charging. Once the battery is fully charged (about 4 hours), the red light will stay solid and bright.
Q4: Do all packs come with the leather storage case?
A4: The leather storage case is included as a free gift for orders of 2 or more batteries. This premium case keeps your batteries neatly organized, prevents accidental short circuits, and protects them from dust and moisture.
Q5: Is this battery safe for high-drain devices?
A5: Absolutely. The battery features a state-of-the-art 6-layer intelligent protection chip. It monitors and protects against overcharging, short circuits, over-temperature, and other potential hazards, ensuring complete safety even during heavy discharge usage.
