"The battery dies quickly," "I'm worried about used phones." We'll clear up those concerns.

When considering a used smartphone for its cost performance, the biggest concern for most people is "battery degradation." It's natural for cautious users, especially those in their 20s and 30s, to feel that "if the battery dies quickly, a cheap phone isn't worth it."

However, to get straight to the point, a used smartphone with a clearly indicated battery status is perfectly usable. By choosing a shop that provides information on battery charge and replacement history, you can minimize your concerns when making a purchase.

This article will provide a detailed explanation of everything from the basics of used smartphone batteries to pre-purchase checklist items and recommended models.

How degraded are used smartphone batteries? Let's find out the benchmarks.

How battery degradation progresses

Smartphone batteries generally start to show noticeable degradation after about 500 charge cycles. For devices used for 2-3 years, the maximum battery capacity is often around 80-90%, with individual differences depending on usage frequency and charging habits.

What are the perceptible symptoms?

• Battery level drops suddenly

• Battery drops below 20% quickly even after 100% charge

• Unexpected shutdowns during high-load activities

It's important to check the battery information at the time of purchase before these symptoms appear.

For iPhones, check the "Maximum Capacity" carefully.

On an iPhone, you can check the maximum capacity (%) by going to "Settings" → "Battery" → "Battery Health & Charging". A new iPhone is at 100%, and you'll likely notice reduced battery life when it drops below 85%.

At PRODIG, the maximum battery capacity and replacement history for each iPhone are clearly stated for each product, allowing you to understand its condition before purchasing.

Battery capacity目安 (Perceptible level)

• 100-90%: Like new, good battery life

• 89-85%: Still practical for everyday use

• 84% or less: Noticeable difference in performance. More suitable for a secondary device.

Is it difficult to check batteries in used Android smartphones?

Unlike iPhones, Android phones do not have a built-in OS feature to display the maximum battery capacity. Therefore, whether the retailer specifies it or if the battery has been replaced becomes a deciding factor when choosing.

Key points when choosing

• Is it clearly stated that the battery has been replaced with a new one?

• Is it a model with a short usage period (目安: within 2 years of release)?

• Is it a power-efficient device (Pixel and Xperia are relatively stable)?

At PRODIG, the condition of Android devices is also carefully described, allowing you to choose with confidence.

PRODIG's used smartphones allow you to choose with confidence, even regarding battery condition.

PRODIG offers a wide range of used smartphones with detailed battery information clearly stated.

• For iPhones, the maximum capacity is listed numerically.

• For Android, battery replacement history and years of use are available.

• All products are tested for functionality and initialized, ready for immediate use.

Especially products labeled "Battery 90% or higher" or "New battery replaced" offer high satisfaction after purchase and are reliable for use as a second device or for long-term use.

[Smartphone Product List Page]: https://prodig-shop.com/collections/

Finally

Even with a used smartphone, if the battery condition is clearly stated, you can use it with peace of mind for a long time. The key is to choose a trustworthy shop that "visualizes the condition."

PRODIG carefully describes the condition of each product, including battery capacity and whether it has been replaced, making it recommended for cautious buyers.

First, check out the product list and find a device that doesn't compromise on battery quality.

Related Links

• Refurbished iPhone List (PRODIG Official)

• Refurbished iPad List (PRODIG Official)

• Consultation for Corporate Introduction of Smartphones and Tablets is Here

• Smartphone/Tablet Rental (Optimal for short-term use)

• If you want to sell your unwanted smartphone (PRODIG Buyback)