Battery Chargers: Float, Trickle and Boost

Good information contains in this article. This is the one I found most informative regarding the various charging states of batteries:

http://www.nalanda.nitc.ac.in/nitcresources/ee/lectures/BatteryMgmt.pdf

- MS

Say something on trickle charger too

Hi..

As per my knowledge,

Trickle charging means When ever the battery is full charged & no load on the battery(kept in ideal position for a long time), we need to trickle charge the battery inorder to avoid the discharging of the battery.

For example take our mobile batteries,

Even if we connect the mobile charger to an completely charged battery, it will just support the battery not to discharge eventhough it is not charging...

Trust this helps

If most important means you can have only one, I'll take boost. A float or trickle charger will take forever to charge a discharged battery, a boost will do it quickest. A quick boost will top off a slightly discharged battery.

Hi,

For charging a battery all the above charging is required.

Trickle charging:

Trickle charging, or float charging, means charging a battery at a similar rate as to its self discharging thus maintaining a full capacity battery. i.e. battery may discharge even though it is not used. in such cases we prefer trickle charge to maintain the battery rated capacity.

the difference between trickle and float is that float will stop once it charged the battery to a particular voltage. but trickle charge will be continuing which may damage the battery cells.

Boost charging:

it is prefered to charge a deeply discharged battery. the charging rate will be high in this case when compared with that of trickle and float.

normally for VRLA batteries, float voltage will be of 2.23 to 2.25 V/cell.

Boost voltage will be of 2.3 V/Cell.

Normally for a battery these both float and boost is required. flaot can also charge the battery but the time duration will be high when compared with boost.

As a battery and charger manufacturer we supply normally Float cum Boost chargers whcih will automatically transfer from float to boost based on the battery requirement.

Trickle charging the battery when it is not being used serves to avert the sulphination that occurs on the lead plates thereby extending battery life considerably. A small 1volt solar panel, that does not re-charge the battery, can still assure that the battery will not deteriorate over long periods of not being re-charged.

We need to know the type of battery. Lead-acid is fast charge then float for instance.

One is a VRLA battery set and another is NI-CD