ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How to Recharge Alkaline Batteries

Updated on November 21, 2012

How to recharge a used Alkaline battery


The label says: “do not recharge. May leak or explode.” Yes, they may leak or explode when charged but you may charge them.

Note: This article is based on experience and experiments, and other people’s experience on charging these types of batteries. When trying to charge Alkaline batteries, always assume that they will leak and explode so, take precaution. Move anything valuable or flammable away from the cells.

By explode, we mean pop. Alkaline batteries are not life threatening when they explode. Just don’t touch it while it does and do not ingest the substance that comes out of it.

You’ll need:

- Multitester, or volt and ampere meter

- Battery receptacle

- Alligator clips connected to wires

- DC source, like a cell phone charger

- Diodes (any diode) and/or resistors

First, assemble a circuit such where the (+) terminal of the battery is connected to the (+) terminal of the DC source. Arrange the circuit that will run 50-100mA through the battery. A combination of diodes and resistors is suggested. What I use when I charge alkaline batteries are LEDs, six of them arranged in parallel with a 5.7volts source with 600mA max current output. This arrangement runs 50-60mA through the batteries. At 50-100mA, you need to charge the cells the entire day. And what’s good with this configuration is that the voltage drops as the batteries are getting charged. You’ll never fully charge them this way but it decreases the change of a battery leak or explosion.

Use the voltmeter to monitor the voltage of the cells. When they are about to reach 1.8volts, disconnect them and wait for the voltage to drop before reconnecting. Batteries can explode or leak when they reach above 1.8volts. While it’s still below, you are safe. Check the temperature too. If it’s hot or warm, disconnect it and wait for it to cool down. Do this until the batteries gives of 1.65volts or more when disconnected.

You can charge at a very high current but you need to keep on watching the batteries using the above procedure. It speeds up the charging process but increases the risk of leaking and exploding.

Battery brands also have different reactions to recharging. Some can handle an afternoon at 150mA while others will pop. Alkaline Battery Recharging is still an experimental technology. There is always a chance of a leak whatever you do so take precautions when recharging.

Why would you still go for Alkalines and risk a leak when there are NiMH batteries? It’s because alakalines can hold their charge for up to 5 years. NiMH discharges to 0% in two months. Alakline Batteries are more reliable this way even if they only hold about 1500mAh.

Comments

    0 of 8192 characters used
    Post Comment

    • leakeem profile imageAUTHOR

      leakeem 

      6 years ago from Earth

      Yes. It really needs to be monitored, both voltage and temperature, or else. . . poof. . .it pops up. Thanks for the comments!

    • profile image

      dkmayo 

      6 years ago

      A very interesting hub. I gather you must monitor it, so the battery does not get overcharged.

    • backporchstories profile image

      backporchstories 

      6 years ago from Kentucky

      Great info! What I am amazed at is how you can retrieve double A batteries out of the big nine volts battery and ends up being cheaper. Sometimes they try to pull wool over the consumers eyes, but some of us keep our eyes wide open! Glad you stressed the precautions too!

    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)