The batteries Nokia phones are equipped with are very high quality products. BL 4U lithium-ion batteries are free from many of the shortcomings of power supplies produced in previous years.
First of all, such products are devoid of a memory effect, therefore, they can be charged without any restrictions using standard memory cards from a mobile phone. More details about the main technical parameters of this power source will be described below.
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BL-4U Battery Specifications
Know what voltage at the battery terminals is necessary in order, for example, to try to use the product as an analog to other chemical current sources.
The value of the capacity will approximately compare the battery life with other elements. A BL-4U battery has the following characteristics:
| Characteristic | Value |
|---|---|
| Voltage | 3.7 V |
| Capacity | 1000-1200 mAh |
| Type of | Li ion |
| Where to install | Read more HERE |
| Height | 61 mm |
| Width | 38 mm |
| Depth | 4 mm |
| Number of charge / discharge cycles | ~840 |
| Weight | 20 gr |
Each instance of the BL-4U battery is equipped with a controller circuit that does not allow recharging the battery, even if the charging is connected to the phone for a long time.
Such a “fuse” will disconnect the device from power even when a short circuit occurs, which significantly increases the safety of using lithium batteries.
If there are analogues of a larger capacity
If you need to install a larger battery in your phone, you can easily find BL-4U battery analogues that have a capacity of more than 3 times higher than that of the original product. Such batteries are not only characterized by increased battery life.
To charge the model, the difference in capacity of which with the original product is too large, you need to connect the charger for a much longer time period.
If you charge for a short time, the battery will not be fully restored, which will completely nullify its main advantage - increased capacity.
The quality of batteries with higher capacities is also often not up to par. You can insure yourself a bit from acquiring a completely non-working product if you make a purchase on Aliexpress.
According to reviews posted by real buyers, it will be possible to judge whether it is worth purchasing such products remotely. Such a function is provided by the trading platform and each buyer can describe the nuances of the acquisition and use of the purchase.
Despite the increased risk, the purchase of an original product or a battery with increased capacity in this way can be several times cheaper. This price advantage is explained by the fact that goods can be presented directly from the manufacturer on electronic trading floors.
When buying a product of high capacity, you should definitely ask the seller about compatibility with a specific Nokia phone model. If there is no positive answer, then it is better to refuse such a purchase and purchase an original model that is fully suitable both in size and in voltage.
What phones are installed
Removable BL-4U batteries are installed primarily on original phones of this type. Such a battery is suitable for installation on the following Nokia models:
| Compatible with the following Nokia phones | ||
|---|---|---|
| 3120 | 6216 | E75 |
| 5250 | 6300i | Asha 300 |
| 5330 | 6600 and 6600i | Asha 305 |
| 5530 | 8800 | Asha 306 |
| 5730 | C5-03 | Asha 311 |
| 6212 | E66 | Asha 500 |
The battery can also be used as a direct current source in various homemade products. Due to their compact size and light weight, such products can be used in radio-controlled models of various equipment.
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