Help on Li-Poly Charger 6000mAH Battery Charger Circuit

Hi all.

I want to use 3.7V Li-Poly 6000mAH Battery for my project.

https://www.sparkfun.com/products/8484

Can I use this below Charger for the 6000mAH Battery?

https://www.sparkfun.com/products/10217

I am worried about, the Battery I want to use this Tipple Cell but the Charge controller chip MCP73831T is for Single Cell.

Any suggestion ... about the Charging Circuit?

Regards.

My advice is based on my interpretation of the data sheets.
I could be wrong, so don't blame me if something explodes

Can I use this below Charger for the 6000mAH Battery?
https://www.sparkfun.com/products/10217

sakibnaz

Yes you can use that charger, but it will take over 12 hours to charge fully.

I am worried about, the Battery I want to use this Tipple Cell but the Charge controller chip MCP73831T is for Single Cell.

sakibnaz

The three cells are in parallel, putting out 3.7 volts.
They should be charged by a single cell charger.

Thanks ExperimenterUK for reply.

12Hr is too long time. Can you advise any other charge controller chip to reduce this charging time?

Regards.

12Hr is too long time. Can you advise any other charge controller chip to reduce this charging time ?

sakibnaz

Sorry no idea, you have not said how fast you need to recharge.

Just look around for a charger that is big enough.

6000/400 = 15 hours to charge the cells or may be more time
u need a separate charger that has high output current to reduce time

Hi All.

I found Charge controller chip MCP73843-410 which can supply 1Amp charging current.

http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010554

I'll use the charging from USB Power. As PC USB Port limitation is 500mAh so I want to use DC Wall Adapter with USB Port (https://www.sparkfun.com/products/11456) which can deliver +5v, 1Amp. Now I need your two suggestions:

-1. Anyone used Charge controller MCP73843-410? Will it be a good choice for fast charging?

-2. I am planning to use MicroUSB SMD Connector. So MicroUSB Connector PIN can handle 1Amp ...? Or I need to choose a big connector type?

Thank you.

Regards.

I'll use the charging from USB Power. As PC USB Port limitation is 500mAh so I want to use DC Wall Adapter with USB Port (https://www.sparkfun.com/products/11456) which can deliver +5v, 1Amp.

sakibnaz

I'm not sure what you mean by "USB power" ?
If the power comes from a PC's USB socket, it is USB powered, if from a mains adapter
it is mains powered, (although converted to 5 volts).

The MCP73843-410 uses an external transistor to regulate the current.
You can probably upgrade this to handle more amps but it will need a big heat-sink
and a large power supply.

If you want a fast charge the safest way is to buy a mains charger.
A 1 amp charger will charge your pack in 6 hrs.
A 3 amp charger will charge your pack in 2 hrs.
A 6 amp charger will charge your pack in 1 hr.