Battery Backup Unit Assembly
Backup pack that opens (or holds) the door on mains failure, with its own charge/control circuit. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
3 top-level lines · 8 rows shown · 45 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Li-ion Cell, 18650 | li-cell-18650 | 6× | 6 | — | part |
| 2 | Backup Charge / Control Board 5 parts | asd-backup-board | 1× | 1 | 37 | assembly |
| 2.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 2.2 | Microcontroller | mcu | 1× | 1 | — | part |
| 2.3 | Power MOSFET | mosfet | 4× | 4 | — | part |
| 2.4 | Relay | relay | 1× | 1 | — | part |
| 2.5 | SMD Passive (R/C/L) | smd-passives | 30× | 30 | — | part |
| 3 | Connector | connector | 2× | 2 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $1–$500 · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| 🇨🇳CATL catl.com ↗ | Ningde, CN | Li-ion cell & pack maker | 5,000 cells | 8–12 wks |
| evebattery.com ↗ | Huizhou, CN | Li-ion cell maker | 5,000 cells | 8–12 wks |
| amararaja.com ↗ | Tirupati, IN | Batteries & energy | 5,000 cells | 8–12 wks |
| durapowergroup.com ↗ | Singapore | Li-ion battery systems | 5,000 cells | 8–12 wks |
| 🇨🇳BYD byd.com ↗ | Shenzhen, CN | EV & battery manufacturer | 5,000 cells | 8–12 wks |