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Nickel Battery Charger Circuits  Page 1
Battery Charges      Alkaline       Lead Acid       
Lithium     
Nickel

Last Updated on: Thursday, December 07, 2017 02:04 PM

Circuits Designed by Dave Johnson, P.E. :

 
  • +5v Powered Charge Pump Battery Charger -  The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit draws current from the +5v available a USB connection and pumps about 70ma of current into the battery. This should be enough current to fully charge a pack of . . . [Circuit by Dave Johnson P.E.,  02/07/10]
     

  • 6v NMH/NiCd Battery Tester -  I designed this circuit to test rechargeable six volt battery packs under constant current conditions. As designed, the circuit applies a 10 amp load to the battery pack. A heat sink must be used on the main power transistor . . . [Circuit by Dave Johnson P.E.,  12/12/04]

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

+5v Powered Charge Pump Battery Charger -  The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit draws current from the +5v available a USB connection and pumps about 70ma of current into the battery. This should be enough current to fully charge a pack of . . . [Circuit by Dave Johnson P.E.,  02/07/10]

 

4-Cell Ni-Cad Regulator/Charger for Notebook Computers -  DN54 Design Notes (Linear Technology). . .  [Linear Technology]

 

6v NMH/NiCd Battery Tester -  I designed this circuit to test rechargeable six volt battery packs under constant current conditions. As designed, the circuit applies a 10 amp load to the battery pack. A heat sink must be used on the main power transistor . . . [Circuit by Dave Johnson P.E.,  12/12/04]

 

A High Speed NiCd Charger for Electric R/C -  A few years back, I published a design for a Low Cost Thermal Peak Detection Charger. Since then, I've designed several other chargers, in my ongoing quest to avoid having to spend money. Of course, in building all these designs, I've probably spent more than a really good commercial charger would have cost me. But designing and building is half the fun. . .  [Stefan Vorketter]

 

AA Battery Solar Charger -  This almost trivial circuit may be used to charge a pair of AA or AAA sized cells insun. . .  [(C) G. Forrest Cook 1999]

 

Adjustable 3-Terminal Regulator for Low-Cost Battery Charging Systems -  Application Note. . .  [National Semiconductor]

 

AN-1075: Smart Battery Charging with COP8ACC -  Application Note. . .  [National Semiconductor]

 

AN2 Portable Ni-Cd Battery Charger: Inexpensive Load Tolerant Step-Up Energy Source -  Zetex Semiconductors Applications Note:   A relatively simple low parts count topology is presented for a one transistor design, that allows "in  field" re-charge of Ni-Cd battery packs from a convenient energy source such as an automotive battery. The note includes transformer design and winding details. Though designed for a specific case,   circuit and  principle employed should lend itself to many or applications. . . . 

 

AN26 Fast Charging Batteries with Zetex High Current PNP Transistors & Benchmarq Controller ICs -  Zetex Semiconductors Applications Note:   High current, fast switching PNP transistors are capable of replacing large packaged P-Channel MOSFETs, when attention is paid to  base drive requirements. This enables space and performance efficient designs at much reduced cost.  . . . 

 

AN667: Smart Battery Charger with Smbus Interface -  Application Note Published 26-Aug-97. . .  [Microchip]

 

AN-946: High-Efficiency 3a Battery Chargers Use LM2576 Regulators -  Application Note. . .  [National Semiconductor]

 

AN960: New Components & Design Methods Bring Intelligence to Battery Charger Applications -  Application Note Published 19-Nov-04. . .  [Microchip]

 

Automatic 3-Phase Induction Motor Starter -  The starter circuit presented here offers two main advantages: single-phase prevention and automatic star-to-delta conversion. . . .  [ EFY Enterprises Pvt. Ltd. All rights reserved.]

 

Automatic 9 Volt NiCd Battery Charger -  BR1 can be a bridge rectifier or four diodes (10A) with a 100 PIV rating. A 10, 000uF/50V electrolytic capacitor completes the filtering of the 28. 8V. Yep, C1 is a real clunker. You can use larger if you like, just watch it when you power up. Without a 'power-up' delay circuit of sorts it will probably blow-up the 723 if the capacitor (C1) is too-large. . . .  [Tony van Roon's circuit]

 

Automatic AA Charger -  Rechargeable batteries are very popular for use in all sorts of devices, especially those requiring a high current. The most common type of cell is the AA or penlight and although thousands have been sold, there are very few low-cost chargers to keep them in tip-top condition. Most of them simply charge them at the slow rate and never turn off, you have to remember. . .  [Collin Mitchell's web site]

 

Battery (NiCad) Rejuvenator -  Don't throw away those seemingly un-chargeable, rechargeable batteries; they could very well be brought back to life with the aid of this simple circuit. (Tony van Roon's Tony van Roon) . . .  [Tony van Roon's circuit]

 

Battery Charger Indicates Rate of Charge -  05/25/95 EDN Design Idea   A single LED indicates wherbattery Chargers s delivering a trickle charge or a fast charge, Circuit designed to charge2-14 cells. . . .  [by Larry Suppan, Maxim Integrated Products, Sunnyvale, CA]

 

Battery Charger Takes on Two Roles -  01/01/98 EDN Design Idea   The NiCd and NiMH battery charger in Figure 1 applies a battery fast-charge controller IC in a way that not only provides peak-voltage fast-charge termination--asIC was designed to do--but also precisely regulatescharge curre. . .  [by Thomas A Somerville, Motorola SPS, Tempe, AZ]

 

Battery Charger with LM317 -  LM317 regulator is used to regulate the voltage and current for this circuit. This battery charger should be used only for Ni-Cad cells. Other type of batteries (li-ion, NiMh, Lead and Li-ion polymer) needs special care so it cannot be used. . . .  [Jose Pino]

 

Battery Chargers Indicates Rate of Charge -  05/25/95 EDN Design Idea   A single LED indicates wherbattery Chargers s delivering a trickle charge or a fast charge, Circuit designed to charge2-14 cells. . . .  [by Larry Suppan, Maxim Integrated Products, Sunnyvale, CA]

 

Battery NiCad Rejuvenator -  . . .  [Tony van Roon's circuit]

 

Bringing NiCd's from the Dead -  ASCII format. . . 

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Nickel Battery Charger Circuits
Battery Charges      Alkaline       Lead Acid       
Lithium     
Nickel


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