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3S-parallel-Lithium ion-Battery charging circuit

Mohamed-U3·3S-parallel-Lithium-ion-Battery-charging-circuit

3S-parallel-Lithium ion-Battery charging circuit PCB layout, top view — open source board by Mohamed-U3

About the 3S-parallel-Lithium ion-Battery charging circuit PCB

3S-parallel-Lithium ion-Battery charging circuit is an open source PCB design by Mohamed-U3, published on GitHub under the MIT license. It is a 2-layer board measuring 20 × 37.4 mm, with 36 components from 19 distinct parts.

Other key parts include the BQ24090DGQ, XB8089D and ETA3000. By type, the board carries 11 capacitors, 10 resistors, 4 ICs, 4 connectors, 4 diodes and 2 inductors.

It belongs with the power & battery designs in this gallery.

From the project

With active balancing circuit in the future (v2.0 ISA), the circuit will be able to charge multi-cell connected in parallel and balance between them while discharging.

A complete modular LiPo battery management solution, designed in KiCad by Eng. Mohamed Yousry. This project combines a charger, protection circuit, and active balancer for safe and efficient LiPo battery management, suited for embedded systems, robotics, and DIY electronics.

- Battery Charging Circuit - IC: BQ24090DGQ - Input: 5V (USB or external) - Integrated current setting, termination, and charging indicators - Optimized for single-cell LiPo batteries - Battery Protection Circuit - IC: XB8889D - Overcharge, overdischarge, and short-circuit protection - Automatic recovery feature - Output…

Main components on the 3S-parallel-Lithium ion-Battery charging circuit

BQ24090DGQXB8089DETA3000

3S-parallel-Lithium ion-Battery charging circuit bill of materials (BOM)

36 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ24090DGQ
U1
1
XB8089D
U2
2
ETA3000
U3, U4
1
Battery_conn_in
J1
1
Battery_conn_out
J2
1
Charger_conn
J3
1
Conn_01x04_batteries
J4
1
VAL**
mouse-bite-2mm-slot
3
Red
D1, D3, D4
1
Green
D2
2
1uH
L1, L2
7
10uF
C1, C2, C3, C6, C7, C10, C11
2
1nF
C4, C8
2
10nF
C5, C9
2
1k
R1, R6
1
536R
R2
1
10k
R3
4
1k5
R4, R5, R7, R9
2
51K
R8, R10

3S-parallel-Lithium ion-Battery charging circuit design files

The KiCad project lives in the Mohamed-U3/3S-parallel-Lithium-ion-Battery-charging-circuit repository on GitHub; these links point at the commit this page was built from.

3S-parallel-Lithium ion-Battery charging circuit: common questions

How big is the 3S-parallel-Lithium ion-Battery charging circuit PCB?

The 3S-parallel-Lithium ion-Battery charging circuit measures 20 × 37.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 3S-parallel-Lithium ion-Battery charging circuit?

36 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the 3S-parallel-Lithium ion-Battery charging circuit design files?

From the Mohamed-U3/3S-parallel-Lithium-ion-Battery-charging-circuit repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the 3S-parallel-Lithium ion-Battery charging circuit design in my own project?

Yes, under the terms of its MIT license, which Mohamed-U3 chose for the repository.

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