Extending Battery Life in Wearable Designs

The wearables market is booming. Statistics aggregator web portal Statista, notes that the global market will be worth over $7 billion this year and $12.6 billion by 2018. Although the potential rewards are high, this is not an easy market to enter. Designing smart watches or fitness bracelets is tough; consumers expect lots of functionality, smartphone connectivity, compact form-factor, light weight, and l ...

Read more

WIFI Battery Monitor System – ESP8266

One of the main problem in battery powered projects is to choose/use the proper battery size/model/type. As market is flooded now with a lot of low quality batteries claiming thousands of mAh ( Ultrafire fakes stories is just an example) the only way to proper check them is to run a set of tests. A simple basic tester that will be able to monitor over the entire battery lifetime at least few parameters like ...

Read more

12V Lead Acid Battery Voltage Monitor

This project is a 12V Lead Acid Battery Voltage Monitor Description 12V Lead Acid Battery Monitor is a simple project which tells you the voltage of your Lead acid battery visually with the help of 10 LED’s.  This project is based on the popular LM3914 IC from Texas Instruments. The LM3914 senses the voltage level at the input pin and drives the 10 light emitting diodes based on the voltage detected on inpu ...

Read more

3.7V Li-Ion Battery Charger Circuit

Here is a tried and tested sample circuit of a Li-Ion battery charger that can be used to charge any 3.7V Li-Ion battery using a 5VDC (USB, Solar Panel…) power supply. At the heart of the circuit is one microchip MCP73831, available in SOT-23-5 package. MCP73831 is a highly advanced linear charge management controller for use in space-limited, cost-sensitive applications. This IC employs a constant current/ ...

Read more

Battery powered device hardware design tips

I'm working on a prototype product(Wifi motion sensor) that will be powered from a battery source, it has a mega328(arduino bootloader, with sleep mode on and wake on interrupt,and WDT in case it hangs up), a PIR motion sensor , and a CC3000 break out board. Power saving is done in software, but what type of battery should I use? I initially used 2AA with LT1302-5 boost converter, but I think it was not abl ...

Read more

LTC3305 – Lead Acid Battery Balancer

Features Single IC Balances Up to Four 12V Lead-Acid Batteries in Series All NFET Design Stackable to Balance Larger Series Battery Packs Standalone Balancing Operation: Requires No External μP or Additional Control Circuitry Balancing Current Limited by External PTC Thermistor Continuous Mode and Timer Mode Programmable UV and OV Fault Thresholds Programmable Termination Time and Termination Voltage Therma ...

Read more

Scientists discover a better metal contact that improves two-dimensional transistor performance

Two-dimensional (2D) materials such as molybdenum-disulfide (MoS2) are attracting much attention for future electronic and photonic applications ranging from high-performance computing to flexible and pervasive sensors and optoelectronics. But in order for their promise to be realized, scientists need to understand how the performance of devices made with 2D materials is affected by different kinds of metal ...

Read more

A new type of glass could double your smartphone’s battery life

The batteries inside our smartphones and laptops are fighting a losing battle when it comes to keeping these devices juiced up, but researchers from ETH Zurich have discovered a new type of glass material that could make a major difference: vanadate-borate glass. The glass can be used as an electrode material in lithium-ion batteries to almost double the amount of time they last between charges. Scientists ...

Read more

Self-tinting “breathing” window doubles as a transparent battery

Scientists at the Nanyang Technological University (NTU) in Singapore have developed a smart window that is able to tint itself blue, partially blocking incoming light, without the need for an external power source. The device also functions as a small transparent battery that recharges on its own simply by interacting with the oxygen in its surroundings. Indoor cooling can make up a sizeable percentage of ...

Read more

A Billion Holes Can Make a Battery

COLLEGE PARK, Md. - Researchers at the University of Maryland have invented a single tiny structure that includes all the components of a battery that they say could bring about the ultimate miniaturization of energy storage components. The structure is called a nanopore: a tiny hole in a ceramic sheet that holds electrolyte to carry the electrical charge between nanotube electrodes at either end.  The exis ...

Read more

New electrolyte to enable cheaper, less toxic magnesium-sulfur-based batteries

There's another promising contender in the race to supplant the dominance of lithium-ion and metal-hydride based batteries in the world of energy storage. New research from the Karlsruhe Institute of Technology's (KIT's) Helmholtz Institute Ulm (HIU) details the development of an electrolyte that can be used in new magnesium-sulfur battery cells that would be more efficient and inexpensive than the dominant ...

Read more

Solar Panel Battery Charge Controller Using Arduino

This is an updated version of Solar Panel Charge Controller Using Arduino. Solar Panel Battery Charge Controller Using Arduino Pictures of Power box and Arduino solar charge regulator: Charge Regulator with Power Box Connections to Regulator Inside the Box The output voltage of the ACS712 is 2.5V with no input while the spec sheet specifies 66 to 185 mV/A output sensitivity. That's a broad range and given t ...

Read more
Scroll to top