Inverter Batteries: How are they rated & other questions

Replies

• 

  Jeffrey Arulraj

  12V36A = the battery can give a maximum of 36 A in an hour and 12V 100A can give 100 A current in an hour
  
  The overall capacity of both thr batteries are different
  
  Batteries are rated based on the current rating they can provide
  
  The voltage rating of the Solar panel must be higher than the Voltage rating of the battery to be charged
  
  To Charge a 12V battery U will need minimum 13.6 V output from the Solar panel. The wattage determines how long you will have to charge the battery
  
  Higher the Wattage lesser charging time
• 

  lal

  1. Batteries are rated in Ampere-hour (Ah) or Watt-hour (Wh). A 5Ah battery can provide 5 amperes for one hour constantly before it becomes usable. If the current is drawn at a rate of 2.5Ah, it will last for two hours. Same way a 10Wh, battery can deliver power at the rate of 10W for an hour.
  
  2. It should be 12V36Ah. The battery will last for an hour is current is drawn at the rate of 36A. A 100Ah battery can deliver 100A constantly for an hour. If the current drawn is 200A, the battery will last only for 30 minutes.
  
  3. Batteries don't have an effect on load, unless batteries of wrong voltage rating are used. Load affects battery. The rate at which the battery is loaded will decide how long shall it be able to provide power.
  
  4. Voltage outupt of the charging unit should be greater than the battery terminal voltage to charge it. Different types of batteries have different charging rates. For instance, a lead acid battery should be charged at 10percent of its rated current. A 10Ah battery should be charged at 1A or less. Solar panel power depends on the rate of charging current and number of batteries. Well, it is usually the job of the charging unit to take care of these things. So it should depend on the charging unit rating.
• 

  dhruba sunuwar

  thank you @#-Link-Snipped-# and @#-Link-Snipped-#... 😁 😁
  and some more questions:
  how long will it to charge a 12V36Ah battery and 12v100Ah battery by 20 watt solar panel for each battery. will a single solar panel of 20 watt be able to charge both the battries, and how long will it take?
• 

  Jeffrey Arulraj

  Do post the maximum output voltage of the 20Watt solar panel
  
  Friend while charging the VOLTAGE is more important than WATTAGE Please post the VOLTAGE which can be got from the solar panel
  
  

  Jeffrey Samuel

  To Charge a 12V battery U will need minimum 13.6 V output from the Solar panel. The wattage determines how long you will have to charge the battery

• 

  lal

  Assuming the battery is fully discharged.
  Theoretically, total time taken to charge completely = total watt hours/charging power
  
  For a 12V-36Ah battery, charging time = 12 x 36/20
  Which is equal to 21.6 hours. In real, a 20W panel would take much more time to fully recharge that battery.
• 

  yogi.bharadwaj

  friend first check that is the solar pannel able to charge the battery because a 12V battery can be charged only by a 12V adaptor so check the volt output of the solar pannel. and why don't u use a meter to check how much battery is charged because the wheather conditions are not ideal and u won't be able to check how much time sun is glowing and how much time not.So i think u should use a merter to check the charged potential of battery and check it for 1 week then u will be able to know how much time u need to charge it fully.
• 

  Jeffrey Arulraj

  yogi.bharadwaj

  friend first check that is the solar pannel able to charge the battery because a 12V battery can be charged only by a 12V adaptor so check the volt output of the solar pannel. and why don't u use a meter to check how much battery is charged because the wheather conditions are not ideal and u won't be able to check how much time sun is glowing and how much time not.So i think u should use a merter to check the charged potential of battery and check it for 1 week then u will be able to know how much time u need to charge it fully.

  Brother for a chemical reaction to reverse you must apply voltage greater than the potential developed
  
  So 12 V battery can't be charged by 12 V supply
  
  If you have any problem check your mobile battery voltage and the output of the adaptor
• 

  arunchary

  Hi to all my friends. while coming to the battery and charging concepts.generally battery is rated with standby voltage and floating voltage and charging voltage with respect to currents. for example 12v26AH battery its floating voltage is around 14.2to14.8v so we can apply voltage inconsideration to charge the battery up to this level extent. if we required to charge the battery quickly means we need to design the charger which of rated as more no.of currents with 13.6to 14.5v of voltage .if i need to charge 26Ah battery i designed 2Amps with13.6v charger then it would be takes max 12hrs to full when its dried if not it will be changes the hrs depends up on the battery level.charger may changes with respect to battery configuration like Li-ion,lead acid ,NICd etc...
• 

  dhruba sunuwar

  Jeffrey Samuel

  Brother for a chemical reaction to reverse you must apply voltage greater than the potential developed
  
  So 12 V battery can't be charged by 12 V supply
  
  If you have any problem check your mobile battery voltage and the output of the adaptor

  if i put a 12V36A battery and a 12V100A battery in parallel and connect it to a 20 watt solar panel, how far will that be advantageous?? or is it useless?
• 

  Jeffrey Arulraj

  Mate there won;t be charging of battery note this
  
  Battery Voltage MUST BE LESS THAN THE CHARGERS OUTPUT VOLTAGE
  
  You know 12V battery can't be charged with a 12 V supply
  
  I don't care about the damn current
  
  Why don't you test it out it is not going to destroy the battery or any other component So try it out practically