mobile | classic
Dataweek Electronics & Communications Technology Magazine





Follow us on:
Follow us on Facebook Share via Twitter Share via LinkedIn


Search...

Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2017


 

Ensuring a longer battery lifecycle
11 October 2017, Power Electronics / Power Management

It goes without saying that a battery with a longer lifetime provides economic benefits in terms of lower replacement costs, but a longer lasting battery can prove particularly beneficial for certain types of application.

The usage of a battery can be roughly divided into cyclic use and standby use. When a battery is being used as a power source regularly and it is being discharged and subsequently recharged, this can be considered cyclic use. Examples of this type of use include batteries for golf carts, stackers, toy cars, portable power tools, etc.

Standby use is also known as float use, in which the application applies the battery as an alternate source of power – it is used during emergencies upon failure of the main power source. Batteries used in alarm systems, emergency lights and UPSs are some examples of applications in standby use. Standby batteries are kept fully charged so that they can provide service immediately when the power has been cut off. The batteries remain connected to a trickle charger in float charging mode in order to keep them fully charged and ready for use anytime.

The battery lifetime is definitely an important consideration when choosing a battery, however the battery cycle life is of more emphasis for applications characterised by cyclic use.

To ensure users get maximum usage from its batteries, Forbatt attaches great importance to quality, in everything from materials to assembly processes. Since those factors ultimately affect battery performance and lifetime, Forbatt’s batteries are manufactured with the highest quality cells and components to give an excellent and stable performance. The battery plate, for example, utilises a lead-calcium alloy and a small amount of tin and calcium in the grid alloy imparts strength to the plate and durability in cycle service. The lead-calcium alloy grid structure provides an extra margin of performance and life, and ensures superior recovery from discharge.

Forbatt has more than 40 years’ experience in manufacturing batteries. By thoroughly reviewing each step of manufacture with the rigorous supervision of the company’s quality control system, it strives to continually ensure its production processes, products and service meet the highest standards of quality.

What lifetime should you expect?

There are several factors that may affect the lifetime of a battery, including its design, the application, operating temperature, charging/discharging method, storage conditions and maintenance. In general, a battery used in standby applications has a longer expectation of battery life than a battery in cyclic use. However, the battery designed for cyclic use may have a better outcome than the standby battery in a cycle life test.

Standby life or float life is the life expectancy of a battery under continuous charge. In standby use, the battery has a design life up to three years that varies with the frequency and depth of discharge, the float voltage and the ambient temperature.

Unlike the float life, the battery cycle life is the number of charge and discharge cycles that can be achieved before a battery reaches the end of its useful life. In cyclical applications, from 250 up to 1000 charge and discharge cycles might be expected depending on the depth of discharge. The number of cycles depends on the capacity taken from the battery, depth of discharge, operating temperature and charging method.

How to maximise battery lifetime

What can the user do to ensure they get the maximum lifetime out of a battery, in terms of storage conditions, correct charging etc?

To obtain the maximum battery lifetime and performance, batteries should be recharged, discharged, stored and maintained in the correct way. Faulty procedures, inadequate charging methods, over-charge, over-discharge, excessive repetition of discharge, high-rate discharge and fast charge will result in failure to recover normal capacity, reduced capacity or shortened battery service life. It is important to follow the manufacturer’s instructions to select a correct charging/discharging method to protect the battery.

Also pay attention to the influence of ambient temperature. The ideal operating temperature is 20°C–25°C. A battery’s life might be shortened or it might experience a higher possibility of thermal runway when working at a high temperature.

In contrast with high temperature, the discharge time will decrease if the battery is working at a lower temperature. High ambient temperature will accelerate the deterioration of battery components. Charging at lower temperature, however, may cause generation of gas which can lead to an increase in the internal pressure of the battery or a decrease in the electrolyte, thereby shortening its service life.

The appropriate operating ambient temperature and storage conditions are as important as applying the correct charging and discharging methods. Place batteries in a cool, dry and ventilated place where the ambient temperature is around 20°C–25°C if possible, and recharge them every three months when they are not in use. Battery life will decrease with increasing temperature, so do not store and avoid operating one at an ambient temperature of higher than 40°C.

It is necessary to perform periodic maintenance to ensure optimum reliability of a battery. We recommend that inspections should be performed at least every three months. In general, periodic maintenance will include visual battery inspection, ambient temperature checking, capacity test, voltage measurement, float voltage inspection, high rate load test, and checking the resistance and tightness of connections. These procedures are designed to determine the gradual decrease of capacity and to detect any abnormal error or individual battery conditions that may impact on system reliability.

For more information contact Forbatt SA, +27 (0)11 469 3598, sales@forbatt.co, www.format.co


Credit(s)
Supplied By: Forbatt SA
Tel: +27 11 469 3598
Fax: +27 11 469 3932
Email: sales@forbatt.co
www: www.forbatt.co/index.php
  Share on Facebook Share via Twitter Share via LinkedIn    

Further reading:

  • 1800 W electronic load
    14 November 2018, Conical Technologies, Test & Measurement, Power Electronics / Power Management
    Itech announced the release of the latest addition to its electronic load range, the IT8615. This e-Load has a compact height of only 3U for an 1800 Watt load, with an AC frequency adjustable from 45 ...
  • Programmable DC power supplies
    14 November 2018, Accutronics, Power Electronics / Power Management
    TDK announced the addition of high-power GSP models to the TDK Lambda GENESYS+ series of programmable DC power supplies. This expansion now provides 2U high, 10 kW and 3U high, 15 kW versions with output ...
  • Li-ion battery fuel gauges
    14 November 2018, CST Electronics, Power Electronics / Power Management
    Designers of lithium-ion (Li-ion) battery-powered mobile and portable devices can improve the end-user experience by extending runtime and delivering accurate battery state-of-charge (SOC) data with the ...
  • AC/DC converters for cost sensitive applications
    14 November 2018, Avnet South Africa, Power Electronics / Power Management
    Aimtec's new AC/DC series offer greater cost effectiveness following new production automation, leading to improved reliability and performance. Offering a commercial input voltage range of 85-264 V a.c. ...
  • IGBT/MOSFET driver with integrated bootstrap diodes
    14 November 2018, Altron Arrow, Power Electronics / Power Management
    Infineon Technologies has introduced a new half-bridge, 650 V rated EiceDRIVER based on the company’s unique SOI technology. The 2ED2304S06F provides leading negative VS transient immunity, monolithic ...
  • High-side power switches for hot-swap ports
    14 November 2018, Altron Arrow, Power Electronics / Power Management
    Diodes Incorporated introduced the AP22815 and AP22615 3A single-channel high-side power switches for USB ports and other hot-swap applications. These devices are designed to provide protection for any ...
  • Dual-channel 4 A gate driver
    14 November 2018, EBV Electrolink, Power Electronics / Power Management
    The STGAP2DM gate driver, the second in the STGAP2 series of galvanically isolated drivers from STMicroelectronics, integrates low-voltage control and interface circuitry with two isolated output channels ...
  • DC-DC converter with integrated H-bridge
    10 October 2018, Altron Arrow, Power Electronics / Power Management
    Diodes Incorporated’s new AP72200 is a high-current synchronous buck/boost DC-DC converter with integrated high-side and low-side H-bridge MOSFETs. It delivers up to 97% efficiency with 1% voltage regulation ...
  • Half-brick DC-DC converter
    10 October 2018, Conical Technologies, Power Electronics / Power Management
    SynQor introduced the new NQ40, non-isolated half-brick DC-DC converter – a buck/boost regulator which employs synchronous rectification technology to achieve extremely high conversion efficiency. The ...
  • UCT team to build solar powered house
    10 October 2018, Power Electronics / Power Management
    Solar Decathlon challenges teams to design and build a ‘green’ house of between 55 and 110 square metres, powered by only solar energy and equipped with technically advanced building and energy technologies. ...
  • Safety of lithium-ion batteries
    10 October 2018, Uniross Batteries, Power Electronics / Power Management
    At the original time of writing of this article, in August 2016, Tesla Motors expected to consume two billion Li-ion cells by 2017. Both the Tesla Model S and Model X electric vehicles (EV) get their ...
  • Power monitoring IC with reinforced isolation
    10 October 2018, Altron Arrow, Power Electronics / Power Management
    Allegro MicroSystems has released a fully integrated, small form-factor power monitoring IC with reinforced voltage isolation. The ACS724 and ACS711 current sensor ICs are commonly used in Internet-connected ...

 
 
         
Contact:
Technews Publishing (Pty) Ltd
1st Floor, Stabilitas House
265 Kent Ave, Randburg, 2194
South Africa
Publications by Technews
Dataweek Electronics & Communications Technology
Electronic Buyers Guide (EBG)

Hi-Tech Security Solutions
Hi-Tech Security Business Directory

Motion Control in Southern Africa
Motion Control Buyers’ Guide (MCBG)

South African Instrumentation & Control
South African Instrumentation & Control Buyers’ Guide (IBG)
Other
Terms & conditions of use, including privacy policy
PAIA Manual





 

         
    Classic | Mobile

Copyright © Technews Publishing (Pty) Ltd. All rights reserved.