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HSMM-MESH - A high speed, self discovering, self configuring, fault tolerant, wireless computer network that can run for days from a fully charged car battery with focus on emergency communications

TM 241 battery replacement - Kenwood TM-241 battery replacement topic

Battery Bank - Specialize in batteries and batteries charges

Solar panels test - Solar panels test for portable battery charger by YO4HHP

Amplifiers - Care and Feeding - Antenna and Power considerations, ALC Keying interface, Battery info, Keying interfaces and more

Rechargeable Battery Review - Rechargeable Battery Comparisons

Battery voltage booster - A battery voltage booster project with pictures and schematic by KD7W

Battery Articles - A collection of battery questions and the replys from Red Scholefield, a battery engineer.

Rechargable Battery Information - All you need to know to keep your batteries fit and well!

Change Battery on DVS-2 - The DVS-2 is a CQ unit for the Yaesu Trancievers.

Car and Deep Cycle Battery FAQ - Battery consumer information and answers to frequently asked questions (faq) about car and deep cycle batteries.

Battery Comparisons in QRP Applications - AE5X battery comparison

Home Brew 9 Volt Battery Clip - Make your own battery clip by nj2x

Fast, smart NiCD/NiMh battery charger - PCB for a battery charger described in the datasheet for the MAX712/MAX713 fast charge controllers.

NiCad battery charger plan - SV1BSX project for a Nicad battery charger

Power Supply for Floating Pb Batteries - An easy-to-build power supply for floating pb batteries

Automatic Battery Charger Project - A project for an automatic battery charger from 12.6v to 13.8v

Adjustable Regulated Battery Charger - This battery charger circuit is regulated and adjustable to make this circuit able to charge the mosto NiCAD battery.

A NiCAD Battery Charger - A NiCAD Battery Charger with Current and Voltage Limiting

AVR Butterfly Keyer - The Atmel AVR Butterfly is a credit card sized board which contains an AVR MEGA169 processor, a six character LCD display, a five way joystick navigation switch, a piezo speaker, a 3 volt lithium battery cell for power and a few other odds and ends.

ZL2PD CMOS Keyer - Two cheap CMOS ICs and a few transistors was all that was required to rebuild an elderly TTL automatic morse keyer into a low current lightweight battery powered iambic morse keyer.

Find RFI causes in mobile operations - Troubleshooting your power supply, in determinig connections to battery, alternator and regulator interference and checking power supply leads.

A 12-Volt Homebrew Regen - A one-tube battery-powered regenerative receiver.