The charger can charge 7.4V lithium battries with CC and CV mode.
Built using LM317 and Arduino, charge current 800mA (CC) and charge voltage 8.4 (CV).
| ID | Name | Designator | Footprint | Quantity | Mounted | |
|---|---|---|---|---|---|---|
| 1 | LM317TG | CONSTANT_CURRENT,CONSTANT_VOLTAGE | TO-220(TO-220-3) | 2 | Yes | C89320 |
| 2 | 1.5R 1W | R1 | 10W | 1 | Yes | |
| 3 | 3.3k | R3 | AXIAL-0.3 | 1 | Yes | |
| 4 | 560R | R2 | AXIAL 0.3/0.8/1.5 | 1 | Yes | |
| 5 | spdt 12v relay | U5,U1 | 5 PIN SPDT RELAY | 2 | Yes | |
| 6 | DC JACK | IN_+12V | DC JACK (123) | 1 | Yes | |
| 7 | 1N4007 | D2,D1 | DO-41 | 2 | Yes | |
| 8 | BC547B Tube | Q1,Q2 | TO-92(TO-92-3) | 2 | Yes | C2092 |
| 9 | 1k | R5,R4,R8 | AXIAL-0.3 | 3 | Yes | |
| 10 | Battery_terminal | P1 | HDR-1X2/2.54 | 1 | Yes | C49661 |
| 11 | 1M | R6,R7 | AXIAL-0.3 | 2 | Yes | |
| 12 | 2.2R 5W | SHUNT | 1W | 1 | Yes | |
| 13 | NO | U3 | ARDUINO_NANO | 1 | Yes | |
| 14 | 10uf | C1 | CAP-D3.0XF1.5 | 1 | Yes | |
| 15 | LCD | U4 | LCD | 1 | Yes | |
| 16 | 10k | R9 | TRIMPOT | 1 | Yes | C125022 |
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