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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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BATTERY CHARGING x AUTOMOBILE BATTERY CHARGER x CHARGING (BATTERY) xx BATTERY Low power windmill uses a bicycle generator and a window fan propeller. Output is about 0.5 amps at 6.6 volts AC. This is used to charge a simple homemade lead acid storage battery. Battery output used to power a transistor radio. Inexpensive 24-hour clock timer and a simple relay circuit can prevent battery damage from over charging. Simple circuit for a controlled-current nicad battery charger. Will recharge batteries in 4 or 5 hours and can be left on without danger of overcharging. Circuit for a charging circuit which will handle any 6 to 24-volt rechargeable battery. Est. cost: under $10. Build the HT Ni-cader, a nicad battery charger which operates from either battery power or AC line. A simple, inexpensive slow charger for charging the special battery used in the Yaesu FT-207R two-meter transceiver without the need to have the battery inside the unit. Thus, you can charge one battery while using another. Lab quality power supply features preset and variable output. Use it to power or charge Handi-Talkies or as a well filtered d.c. power supply. Modify the Icom IC-2A(T) radio battery pack so that it can be charged with a home-built wall charger or home-built 12-volt charging cord. Build your own NiCd battery charger for use with 2 meter handheld radios (such as the ICOM 2AT). The handy-pack, a self-charging heavy duty battery pack for your handi-talkie will provide up to 3 days of power for field operations. The project consists of 7 individual 1.2 volt cells and a two-level charging circuit to allow normal charging and continuous trickle charging. The practical aspects of charging nickel-cadmium batteries are discussed. Primer on Gel Cell batteries. How they work and how to put them to work. Includes schematics for several battery charger circuits. Battery charging and battery eliminator circuits. A short primer on rechargeable batteries. Includes a schematic of the lithium-ion charging circuit. How to keep an emergency back-up radio station battery charged. Battery is automatically disconnected from power supply unit when not in use and automatically charged when in use. Tip on fully discharging NiCd batteries before recharging. Smart charger for Rayovac "Renewal" rechargeable alkaline batteries. Charger for nickel-cadmium batteries. A low-cost 6 and 12 volt battery charger. Lightweight rechargeable battery power pack makes any 5-watt transceiver a "portable" with power from 1-1/2 to 8 hours on a single charge. Can you recharge any battery? A discussion of the mechanics and theory of recharging batteries. The low-down on low-cost chargers. Includes schematics for a 40-ma and a 17-ma dry cell recharger. A combination battery tester and battery charger. Use on AA, AAA, C, and D sizes of zinc-carbon, mercury, alkaline, and nickel-cadmium cells. Simple circuit to "float charge" a 12-volt battery (or to power a heavy load that operates intermittently, such as a ham radio transmitter) uses two 12-volt 1-amp light bulbs as current limiters. Tip on using ordinary light bulbs to limit current when charging a bank of batteries using a Variac and bridge rectifier. Build a solar-charge controller, a simple comparator circuit that connects a solar panel to a battery when it senses that the battery voltage is getting low. Includes information on using several 6-volt or 12-volt batteries as part of a solar-charged electrical system. Circuit for a 12-volt battery charger. Uses a General Electric X3 silicon-controlled rectifier which will handle up to 13 amps. Battery charger for the Bulova Accutron electric watch. Rebuild an old battery charger using a silicon-controlled (SCR) circuit. Recharging dry cells. How practical? How safe? How economical? Extra life from dry cells can be achieved by periodic recharging using this simple charging circuit. Supercharger. Build this wide range nicad battery charger with built-in automatic cut-off timer. Charge one to six cells from AA to D size. You control charging rate and time. Build a charger for trickle charging nicad batteries. Charge 12 AA cells at one time. Est. cost: $8. Economy NiCd battery charger. A convenient and safe way to charge both trickle and fast-charge nickel-cadmium batteries. LEDs show charging status. Charging current is variable from 2-mA to 150-mA, or from 4-mA to 300-mA. Est. cost: $20. NiCd's. How they work. Build a tiny (penny-sized) charging circuit which can be configured for any desired charge rate (current) and voltage. Battery charger circuit for NiCd batteries will provide a rapid charge for AA-size cells requiring a charge current of 150 mA. Car battery charger circuit will quickly charge gelled lead-acid batteries and then turn off at full charge. Battery charger circuit provides a heavy charge to depleted 12-volt auto batteries. Troubleshooting cordless appliances and battery chargers. Build your own NiCad battery charger. Auto battery charger delivers 12 amps at 6 or 12 volts. A trickle charger for your car's battery. Est. cost: $9. Tips on charging lead-acid cells. Circuit for a battery charger which will handle any 6 to 24 volt rechargeable battery. Est. cost: under $10. Circuit for a charger that can give an output of three to twelve volts with an amperage output of up to 15 amps. Est. cost: $20. Charge penlight and large drycell batteries with this charger. Unit can deliver up to 100 mA of charging current at 1.2 volts. Est. cost: $8. The Ni-Cd battery. Myths and mastery of nickel-cadmium rechargeable batteries are explored. Includes circuits for building a battery charger. Solar cell converter. Step up a low-voltage photovoltaic cell's output to power circuits from a 1.2-volt Ni-Cd battery. The solar cell keeps the Ni-Cd charged. A dc-to-dc converter steps up the output to power 5 to 15 volt circuits. Est. cost: $16. A programmable Ni-Cd recycler safely recharges and reconditions nickel-cadmium batteries. Handles up to ten cells of any capacity. Battery charger controller ensures proper and safe charging of liquid-electrolyte lead-acid batteries. This controller is added to any non-automatic 12-volt battery charger. One-button digital timer. Accurately controls the time-on interval for recharging cells and batteries to prevent damage due to overcharging. The timer applies AC line power to a battery charger for a preselected period of time (8-, 10-, or 12-hours). Tip: Nicad batteries should be fully discharged in order to revitalize them. One method described. How to get the most out of your nicad batteries. Part 2. Revive "dead" nicads with this charger/condensor setup. Also tips on maintaining the cells. Charger for nicad batteries that operates off a car's cigarette lighter socket. How to correctly discharge and fully recharge nicad batteries to keep them operating at their best. The care and feeding of rechargeable batteries. Includes tips on the correct way to fully discharge nicads. How to build your own lead-acid-cell recharger. Advice on safe recharging methods for nicads. Build your own photovoltaic battery-charge controller. Build a Ni-Cad battery charger. Resuscitator for nickel-cadmium batteries up to 22 volts. Use this device to burn away internal shorts. Build a trickle charger for a car battery. Build a nickel-cadmiun (NiCad) battery charger that operates off of a 12-volt automobile electrical system. Plugs into cigarette lighter. Recharges four 1.5 volt batteries. Estimated cost: $10. Build your own all-purpose nickel-cadmium charging system. It is fully adjustable and can be used with virtually any battery for either fast or slow charging, reguardless of voltage. Est. cost: $35. Build a portable charger for nickel-cadmium batteries which operates from the electrical system of your car. Tips on the proper procedure for charging NiCd-type batteries. Charger judges how much charge a battery needs. Dry cell battery charger will charge D, C, Z, and #7 cells, 6 and 12 volt batteries and 9 volt radio batteries. Can dry cells be recharged? How to get twenty to thirty times more life out of batteries. Build a combination battery charger and tester. Recharge dry cells up to 12 volts with this unit. Tester determines if the battery will accept a recharge. Constant-current charger for nickel-cadmium cells. Well-regulated charger handles any nickel-cadmium or alkaline AA, C or D cell. A discussion of the rechargeable alkaline battery, a simple test circuit for checking when to charge these batteries and tips on charging. Circuit for charging the 3.75 volt nickel-cadmium battery currently being offered by Edmund Scientific Co. Versatile nickel-cadmium battery charger operates from 115-v AC or 12-v DC at a variety of charging rates. Est. cost: $15. Build the battery multi-charger. Handles between one and six carbon-zinc cells charging four different types simultaneously. Build a sine-wave inverter. Boost 12 volts DC to 117 volts AC at 100 watts. Also used to recharge storage batteries. Est. cost: $70. Build a state-of-the-art battery charge monitor. Determines the proper time to recharge nicad batteries. NiCd Zapper. How to "zap" new life into dead nicad batteries. A properly applied high current can often clear a fault, making the cell useful again. Universal charger for sealed rechargeable batteries. Versatile charger operates as a constant-current source and offers a choice of 12 charging currents (from 9 tp 550mA). Simple low-cost battery charger keeps an automotive-type battery in peak shape. Modify a lead-acid battery charger to charge two batteries at once. Build a solar-powered battery charger to charge a nominal 9.6-volt battery (like those found in a radio-controlled model airplane). Circuit is used to charge an auxiliary battery in your camper as you drive along the road. Battery-charger circuits. (1) Low-to-medium current circuit for 12-volt lead-acid type batteries. (2) Universal circuit for lead-acid, nickel-cadmium and gel-cell batteries. (3) Voltage-level monitor circuit keeps tabs on battery during charging. NiCd battery zapper circuit is a "last-resort" device to save a "dead" NiCd. Trickle charger circuit for a lead acid battery. Battery trickle charger circuit for lawn and garden equipment, motorcycles, etc. Build the "Smartcharger" to recharge the new alkaline battery called "Renewal" (AAA, AA, C, and D size). Charge-It. A dual-regulated charger for NiCd and Gel-Cell batteries. Both charging current and voltage are variable. Circuit to protect against overcharging lead-acid batteries. Circuit to power transistor radios. Recharge 9-volt batteries or use 110-volt line. Rechargeable batteries and a recharger end battery problems. Quick or trickle battery charger. Four electronic kits for your car. A look at two tachometers, a windshield wiper delay and an inverter/battery charger. Battery "brain" tests batteries and recharges those that aren't too far gone. Handles batteries from AAA up to lantern size. Estimated cost: $15. Zap your NiCd batteries back to life with this battery rejuvenator. Repeated high-current surges will often clear up internal shorts and make cells usable again. Tip on rejuvenating Rayovac rechargeable batteries which have fallen below 1.0 volts so that they can again be recharged. Tips on recharging or "boosting" non-rechargeable batteries. Superspeed recharger for nickel-cadmium cells. Charge a D-size cell in 20 to 60 minutes. Slower-speed trickle charger also built into unit. Build a battery charger that accelerates the charging time and shuts itself off to minimize the possibility of overcharging. Jelly battery charger. This electronic circuit is used between your regular car battery charger and the "gell cell" being charged. LED indicator tells if nickel-cadmium batteries are being charged. Versatile battery charger circuit. Will handle from 1 to 6 AA cells and charge at a rate of 50 mA. Universal battery charger designed to recharge gel-cells, but it can be used to recharge Ni-Cd's and any other type of battery that needs a constant-current source, a constant-voltage source, or both. Est. cost: $10. How to determine whether a NiCd battery pack is fully charged by monitoring the charging current over time and charting the result. Battery-charge indicator for use with a cordless screwdriver. Solar power supply that can be used even at night. Solar cells are used to charge a Ni-Cd battery inside this 5-volt or 9-volt "booster". Tip on turning off a battery charger after a set period of time. An intelligent charging circuit that can be adapted for use with a wide range of batteries. One section monitors and controls the charging of the batteries and another section monitors the amount of charge left in the batteries when they're being used to power a circuit. Auto battery charger built around an inexpensive silicon diode rectifier kit can supply up to 1.2 amps at 12 volts DC. The addition of a filter-regulator unit will draw off 3, 6, 9, or 12 volts of low-ripple DC current for use in electronic projects. Trickle charger battery booster will recharge any dry cell that has a rating from 1-1/2 to 22-1/2 volts. Est. cost: $3. Circuit for a 6 and 12 volt, 12 amp battery charger to work off 117 VAC line. Using two clock timers and a charger to keep an idle auto battery fully charged. Setup which uses one charger and a timer to maintain a charge on several 6- and 12-volt batteries. Recharging circuit for gel cells uses a voltage-limited charging method to avoid overcharging. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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