element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
element14's The Ben Heck Show
  • Challenges & Projects
  • element14 presents
  • element14's The Ben Heck Show
  • More
  • Cancel
element14's The Ben Heck Show
Forum Rechargable battery circuit
  • Blog
  • Forum
  • Documents
  • Polls
  • Files
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join element14's The Ben Heck Show to participate - click to join for free!
Actions
  • Share
  • More
  • Cancel
Forum Thread Details
  • State Not Answered
  • Replies 3 replies
  • Subscribers 28 subscribers
  • Views 354 views
  • Users 0 members are here
  • battery
  • charger
Related

Rechargable battery circuit

rickseiden
rickseiden over 10 years ago

Back in 10/14 Ben did an episode on a rechargeable battery circuit.  I have a few questions about that circuit I was hoping someone could answer for me.

 

1) Would the same circuit work with 7.4v instead of 3.7?  I think you just have to change one resistor, but I'm not sure.  Oh, and you'd have to charge it off something other than USB, obviously.  I'm sure the datasheet has the how-to of it, so I'm just wondering if it would work or not.

2) Can you leave the battery hooked up to the circuit after charging is done, and use it to power another circuit, or would you have to disconnect the battery from there, and reconnect it to your "target" circuit?

3) Is there a through hole alternative?

 

What makes me ask these questions:  I have a circuit I'm building that will require a rechargeable battery.  I want to put the whole thing in a project box and seal it up, so the battery needs to be hooked up to both the charger circuit and the circuit I'm planning on running with it.

 

Thanks in advance!

Rick

  • Sign in to reply
  • Cancel
  • elman128
    0 elman128 over 10 years ago

    This is a single-cell charging-only circuit, not full battery protection, so you will need at least over discharge protection too.

     

    Also, if you need two cell (7.4V) then you need completely different solution. This is not about voltage value only, you should monitor each cell voltage separately.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • rickseiden
    0 rickseiden over 10 years ago in reply to elman128

    I'm having trouble finding example circuits and resources for this kind of thing.  Anything you can point out would be very helpful.

     

    Thanks

    Rick

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • elman128
    0 elman128 over 10 years ago in reply to rickseiden

    TI has wide choice of battery management chips. Look at them here Battery Chargers-Front-End Solutions | Products | Battery Management IC | Battery Charger IC

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2025 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube