ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How to Extend the Life of a Nickel-Metal Hydride (NiMH) battery?

Updated on September 19, 2012

Ways to prolong the life of a NiMH battery


NiMH or Nickel Metal Hydride batteries are an improvement over the older NiCd or Nickel Cadmium Batteries. The issue with Nickel Cadmium Batteries is that is suffers from what is called Memory Effect or the properly termed Voltage Depression. There isn’t really a “memory effect” but a depression of voltage caused by crystalline formations inside the battery. These crystals form when the battery cells are overcharged. NiMH batteries are less susceptible to these problems but they still do suffer from these problems. To prevent this and other problems and prolong your battery’s life, try these following things:

Cycle Charge. Cycle charging means to discharge a battery fully then recharge it to full capacity. When you open up a new pack of batteries, you should cycle charge them at least 3 times to reach its maximum performance. Also, cycle charge your NiMH batteries at least once every two weeks. This prevents the crystalline build-up inside the cells.

Do Not Mix With Other Cells. Do not mix NiMH batteries with Alkaline and Lithium Batteries. They behave differently and may have adverse effects on the cells. Plus, do not mix battery packs. Do not mix batteries from a pack to another. Battery packs are paired during the manufacturing process. Those with the same internal resistance and voltage output are paired in a pack. This prevents one cell damaging the other during usage. When batteries from different packs are used together, the battery with the weakest voltage output will degrade faster than the others.

Protect From Reverse Polarity. I mean two things, first is to never put a battery in the wrong polarity and the other is to keep the battery from being in a condition where its polarity is reversed. Reverse polarity can irreversibly damage a battery. Modern Electronic devices have a safety feature that automatically shuts down the device when the cells are below 0.9 volts. However, simple devices like flash lights and radios do not have this feature. When the device shows indications of low battery power, stop using them and remove the battery from the device.

Store in a Discharged State. If you do not plan to use your batteries for a long period of time, discharge them and store them in a cool dry place. Each cell have different self-discharge rate. Though they are small differences, this could cause a battery pack to be “uneven.” What will happen is the batteries will undergo self discharge and one cell will have more charge than the other. When you use them, the other cell will lose charge faster so the device you are using it for will stop working earlier even if the other cell still has charge. When you charge the cells, one will reach full charge before the other and will be overcharged. As pointed out earlier, overcharging can damage NiMH batteries.

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)