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ethiroli's Timeline

Commented on own review

Dec 16, 2012 05:44 PM

But battery manufacture recommends the constant charging only at initial charging (fresh battery) and thereafter the battery should be charged by an inverter having charging voltage of 14.4V and once it is charged to its full capacity, the charger voltage would be maintained at 13.8V, for floating v...oltage or trickle charge. At any incident, the charging current of the battery should not exceed 10% of the capacity of the battery. eg: for 150AH battery, charging current should not exceed 15A at any time. The real full capacity charging, can only be achieved by constant current charger, which is generally costly and one should have knowledge to operate otherwise due to high current, (when battery is completely drained, if charging voltage is set for 16V by mistake, then heavy current will flow) the battery may be damaged. Read More

Commented on own review

Dec 16, 2012 05:39 PM

This is in continuation of my comments on 14th instant 'BATTERY NOT CHARGED BY AN INVERTER TO 100%' I feel it is much worthy to discuss about the type of charging available for a battery. There are two types of charging: (1) Constant voltage charging - available with all inverters, in w...hich the charging voltage for battery is preset to 14.4 V. So, when the drained battery is connected to inverter, due to potential difference between inverter charging voltage and battery voltage, the charging current is around 10-12A and terminal voltage of battery would be around 12V. After the period of 6-7 Hours of charging, the terminal voltage starts picking up to above 13V, and that instant due decrease of potential difference, the charging current decreases. Once the battery terminal voltage reaches 14.4V, the current will be somewhat around 1-2 Amp, called floating charge or trickle charge. On that time the inverter automatically decrease its charging voltage to 13.8V and maintain the charging current of 1-2Amps. Since the current is not constant over the period, the charging under this system for 150AH battery would take around 24 hours. (if continuous) (2) Constant current Charging (Bench Charge): used for initial charge of battery by manufacturer and supplier - Initially Current is kept as constant at 15Amp/12V After few hours, when current decreases to 5-6A due to increase of terminal voltage of battery to 13V, the charger voltage is manually increased to 13V. Now again the current increases. Again the battery voltage picks up close to 13V, again current decreases to somewhat around 5-6A. Then charger voltage is increased 16.5V. Again the current increase. Thus, the voltage is either manually or automatically, increased in such a way to maintain a constant current of 15A to charge. In this method, if a battery is charged at constant current of 15A, the 150AH battery get charged in 10 hours. But battery manufacture recommends the constant chargingRead More

Commented on deepak1068854's review

Dec 15, 2012 09:27 AM

No inverter could able to charge the battery to its full capacity. Go through the article posted on 14th Dec 2012. Inverters are designed for charing voltage of 14.4 and floating voltage of 13.8 with initial charging current of 10-12 Amps. The problems are with Batter which is not designed to charge... to its maximum capacity by inverter. Brand new Batteries on market can able to charge only upto 50-60% of its capacity by an inverter. This can be very well ascertained by a load test as stated in the article. Consumers are made to pay 40% cost extra for what actually they get. If you check the capacity of your battery with proper load vs. Backuptime, and take the issue with battery supplier, you will be immediately returned with cost of the battery, despite of how long the battery is used and supplier will take back the battery. Because, battery supplier don't want to fall on this issue which he could not rectify.Read More

Commented on weknow's review

Dec 15, 2012 02:07 AM

Dear friend, your power consumption table is incorrect. 120W load amounts to 144VA. This load consumes battery current of 12A per hour. If the battery is 100 AH, on 120W load, the inverter should support for minimum of 6hrs 30 min and maximum of 8 hrs 15 mins. As such, 400W load (480VA) takes 40AH c...urrent per hour, so that 150AH battery gives back of minimum 3 Hrs.00 Min and maximum of 3 Hrs 30 mins. Morever, a ceiling fan consumes 70-80W, tubelight consumes 55W (including choke)Read More

Commented on own review

Dec 15, 2012 02:00 AM

This is absolutely true. When I started arguing this issue with my battery supplier,and threatened to take up the issue with consumer forum, he has immediately taken by the battery and paid me the full cost.

Reviewed Choosing an Inverter

Dec 15, 2012 01:48 AM 129062 Views

(Updated Dec 16, 2012 06:38 PM)

An inverter does two main functions. (i) It Converts 220V AC to  12V DC and stores the charge into battery. (ii) When there is no power, it converts 12V DC to 220V AC. Batteries are available in different capacity such as 100AH, 120 AH, 150 AH / 12V DC etc. Battery of 150 AH having 80% ...Read more

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