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Evrimata: Journal of Mechanical Engineering
ISSN : -     EISSN : 30476305     DOI : https://doi.org/10.70822/evrmata.vi
Evrimata: Journal of Mechanical Engineering The interdisciplinary research edition covering scientific areas: - Mechanical Engineering - Otomotive Engineering - Material Engineering Taking into account the interdisciplinary character of the journal, the authors in its materials should emphasize field of application of their research, always emphasizing the importance of the subject for the research community in related fields of knowledge. For example: - If the article deals with the new inorganic materials then should be pointed as such materials may be used by specialists in the field of energy, electronics, etc., or how understanding the mechanism of the processes can be taken into account in the synthesis of other new materials. - If the article is about new methods of mathematical modeling, it should specify what restrictions may apply specifics of field of application to the proposed original method (accounting of external factors, the initial or boundary conditions, internal factors that can not be an accurate accounting and so on). Therefore, when submitting the articles in this section, are welcome articles, co-authors of which are experts in different fields of knowledge.
Articles 1 Documents
Search results for , issue "vol 03. no 02. 2026" : 1 Documents clear
IoT-Based Monitoring and Performance Analysis of a LiFePO4 Starter Battery for Motorcycles Rifky Arie Nugroho; Zakiyah Amalia; Umi Anis Roisatin
Evrimata: Journal of Mechanical Engineering Vol 03. No 02. 2026
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.143

Abstract

The battery is an essential component in the motorcycle electrical system, and its capacity and efficiency directly affect overall vehicle maintenance. In practice, riders typically become aware of a deteriorating battery only when the engine is already difficult to start, leading to reactive and unplanned maintenance. Therefore, this study aims to develop an IoT-based monitoring system to acquire voltage, current, and starter cycle data of a LiFePO4 motorcycle battery. This study also analyzes the effect of State of Charge (SoC) variation and charging duration on starter performance and capacity degradation. Testing was conducted through repeated starter cycles with SoC variations of 100% and 80% and charging durations of 3, 5, and 7 seconds. Capacity reduction was calculated using the Coulomb Counting method. Results show that longer charging durations increased the number of starter cycles under both SoC conditions, with a maximum of 329 cycles at 100% SoC with a 7-second duration and a minimum of 167 cycles at 80% SoC with a 3-second duration. Capacity reduction ranged from 1.24% to 4.20% depending on the test configuration. The developed IoT monitoring system was proven capable of accurately recording and analyzing LiFePO4 battery starter performance as a basis for maintenance decision-making.. The data have shown that the corrosion rate and surface roughness were inversely proportional.

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