NiMH 2000 Cycles

Comments recently asking how the NiMH chemistry fared beyond the first 1000 cycles was a question i asked myself back in the day as well, so a second set of 1000 cycles were run but results were not posted til now.

NiMH 2000 Cycles

Figure 1 – 2000 life cycles NiMH

After a second 1000 cycles the NiMH capacity faded an additional 5%, dropping to 58% of rated capacity from 63% after the first 1000 cycles.

The NiMH chemistry held up well in terms of cycle life when not abused or over-heated by the charger which in-practice can be a difficult thing to do with NiMH battery types due to difficulty at detecting and terminating a full charge correctly and preventing damage from over-heating, especially at faster charge rates such as C/2 and without the use of a temperature sensor.

The PCBA 5010-4 battery analyzer uses a custom ‘voltage only’ method of full-charge termination with multiple redundant detection methods for NiMH and NiCd chemistry types developed over ~15 years which now demonstrates its effectiveness in life cycle testing by not overheating the cells or causing venting of electrolyte and capacity loss other than by what seems to be normal loss as a function of normal use.

One thought on “NiMH 2000 Cycles

  1. Nice article, Lithium Ion Battery Market worth 68.97 Billion USD by 2022 Lithium Ion Battery Market worth 68.97 Billion USD by 2022

    Download PDF Brochure: Lithium Ion Battery Market worth 68.97 Billion USD by 2022

    The increasing demand of energy-efficient, safe, and low-cost batteries is the key factor driving the growth of the lithium ion battery market. The market was valued at USD 23.51 Billion in 2015 and is expected to grow at a CAGR of 16.6% between 2016 and 2022. The base year considered for the study is 2015 and the forecast period is between 2016 and 2022.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>