HiLetgo 5pcs TP4057 1A 3.7V Lithium Battery Charging Board with Protection Type-C USB C Li-ion Battery Charging Board Over TP4056

**** Customer feedback on this product reveals a generally positive experience, particularly in its effectiveness for testing prototype products. Users have found that the board functions successfully, demonstrating reliability right from the first use. The practical application of this board for prototyping is highlighted, although some customers note potential cost concerns when Considering bulk purchasing options elsewhere. However, there have been some discrepancies with the product specifications that have caught the attention of reviewers. Most notably, a difference between the promised TP4057 chip and the actual TP4056 that was received led to some concerns about current setting capabilities as the resistor values on the board were aligned with TP4056 specifications instead. The lack of mounting holes also proved to be a disadvantage for users who wished to integrate this module into larger projects seamlessly. Additionally, while the design includes a bottom layer acting as a heat sink, users reported that significant heat buildup occurs when charging fully discharged batteries, with temperatures reaching excessive levels. This raises concerns about safety and efficiency, suggesting that an increase in the board size might alleviate such issues. Overall, while the board effectively fulfills its primary function for prototyping, some design and specification inConsistencies exist that could deter its use in more permanent applications. **