About MCP73213T Charger battery - Page 1
Forum section: electronics / beginners

author: montcler
author_rank: Contributor
timestamp: June 16, 2012, 04:18:11 am
content: Hello,I wold like to know if this integrated "MCP73213T" might have to charge a 9V rechargeable battery (normal rectangular / PP3 (6LR6)) since the circuit operates at 5V.Or what kind of batteries I can put to charge and how many.In the datasheet puts two but not that type, voltage and how many etc ... I'm not sure.I also like to know if while the battery is charging I can run the circuit. (Without having to wait for the battery is charged).THX.

author: johnmx
author_rank: Frequent Contributor
timestamp: June 16, 2012, 10:50:15 am
content: Did you actually read the data sheet??The title is: “Dual-Cell Li-Ion / Li-Polymer Battery Charge Management Controller with Input Overvoltage Protection”.As the tile says, it’s designed to charge two Li-ion or Li-Polymer batteries.To charge and share at the same time you need to follow the following application note:“AN1149 - Designing A Li-Ion Battery Charger and Load Sharing System With Microchip’s Stand-Alone Li-Ion Battery Charge Management Controller”http://ww1.microchip.com/downloads/en/AppNotes/01149c.pdf

author: montcler
author_rank: Contributor
timestamp: June 17, 2012, 10:08:01 am
content: Hello,Have if you can help me in this conflict I ??have.I have a circuit that is connected outside the house but I would like it to be autonomous with a rechargeable Li-Ion, on the plate is connected stepper motor and driver (L293D), Xbee, PIC 18F4550 at 20MHz and a 8x1 LCD.I would like to know that I can stack.I also put a MC34063 thought to increase the Voltage and current.Since the battery does not supply all the necessary and MCP73213T ¿? to charge the battery.I must say that the XBEE, LCD Motor are not always on.Xbee in RX: 45mA, 3.3 VStepper Motor: 0.64A, 6VLCD 8x1: 1.25mA, 3.3V with BacklightPic 18F4550: 5V, 25mA per I / OTHX.

author: montcler
author_rank: Contributor
timestamp: June 19, 2012, 11:01:48 am
content: Hello again,I would like to know if the model of battery "Turnigy Lipo Battery 1300mAh 2S 7.4V 20C - 30C", I can use the Integrated MCP73213T to charge this battery.Features of the stack:Voltage: 7.4VCells: 2SCapacity: 1300mAh20C DischargeTemporary Discharge: max. 30C (10 sec.)Charging current max. 2CWeight approx 82GrammDimensions: L x W x H 70x 35x 15mmTHX.

author: amyk
author_rank: Super Contributor
timestamp: June 20, 2012, 08:12:15 am
content: Yes, although it is not going to charge particularly quickly even at the highest 1100mA setting. The fact that it's limited to 1100mA and your battery is 1300mAh means it was not designed to charge such big batteries. It's a linear regulator so it's not as efficient and will likely get rather warm at maximum current.Also large lion batteries should preferably be charged using a balancing charger.

author: T4P
author_rank: Super Contributor
timestamp: June 20, 2012, 09:02:47 am
content: Quote from: montcler on June 19, 2012, 11:01:48 amTough luck, find another charger, if you want it to charge fast you need a 2600mAh charger or else this will take quite some time since the battery can handle 2C charging current

author: metalphreak
author_rank: Frequent Contributor
timestamp: June 20, 2012, 09:12:24 am
content: Those RC batteries are also meant to be balance charged at those higher charge currents.

author: montcler
author_rank: Contributor
timestamp: June 20, 2012, 10:16:32 am
content: Hello,Well that is integrated to charge these batteries and not have to buy, because I like it to be on the same PCB.What is the solution?.Greetings.