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GHS 15
| Feature | Specification Details |
| Battery Type | Rechargeable Lithium-ion (Li-ion) |
| Model Code | BL-5C |
| Standard Capacity | 1000 mAh to 1020 mAh (Standard capacity used across OALE and classic feature phones) |
| Voltage | 3.7V (Standard operating voltage) |
| Charging Limit Voltage | 4.2V |
| Dimensions | Approx. 53 × 34 × 6 mm (standardized flat slide-in shape) |
Universal Compatibility: Because the BL-5C is a classic, standardized size originally popularized by Nokia, these batteries are highly interchangeable.
Safety & Built-in IC: High-quality replacement BL-5C batteries come equipped with built-in protection circuit boards (ICs) to safeguard the battery against overheating, short-circuiting, and overcharging.
Easy Replacement: Unlike modern smartphones that require complex tools to pry open adhesive backing, the OALE devices using the 5C battery feature a simple removable back cover, allowing you to swap out the battery in seconds.
Initial Charge: When inserting a brand-new BL-5C battery, it is highly recommended to charge it fully to 100% and discharge it completely for the first 1 or 2 cycles to calibrate the cell properly.
Avoid Heat: Do not leave devices using this battery in direct sunlight (like on a car dashboard), as excessive heat can permanently degrade lithium-ion performance or cause swelling.
Use the Correct Charger: Ensure you are using a standard, stable charger block to avoid pushing unstable voltages into the battery.
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