164 lines
4.8 KiB
Markdown
164 lines
4.8 KiB
Markdown
# Battery Tracker - Functional Specification Document
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## 1. Overview
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Battery Tracker is a personal web application designed to help users manage their rechargeable battery inventory. It solves the common problem of losing track of batteries that are placed in rarely-used devices.
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## 2. Problem Statement
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Users with multiple rechargeable batteries often:
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- Forget which device contains which batteries
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- Cannot quickly determine how many batteries are available
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- Lose track of batteries currently being charged
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- Have no centralized way to manage battery inventory
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## 3. Core Features
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### 3.1 Battery Type Management
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- Define battery form factors (AA, AAA, 18650, CR2032, etc.)
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- Define battery chemistries (NiMH, Li-ion, LiFePO4, etc.)
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- Associate brands with battery types and chemistries
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- Track total quantity per brand-type-chemistry combination
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### 3.2 Battery Status Tracking
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Each brand-type-chemistry combination can have batteries in three states:
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| Status | Description |
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|--------|-------------|
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| **Available** | Batteries in storage, ready for use |
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| **In Use** | Batteries currently placed in a device |
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| **Charging** | Batteries currently being recharged |
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### 3.3 Device Management
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- Create and manage a list of devices (keyboard, mouse, remote, flashlight, etc.)
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- Assign batteries to devices with quantity
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- Quick view of which device has which batteries
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### 3.4 Quick Actions
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- Move batteries between states (Available -> In Use -> Charging -> Available)
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- Batch operations for multiple batteries
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- Quick "return to storage" action when removing from device
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### 3.5 Dashboard
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- Overview of all battery inventory
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- Quick status summary (X available, Y in use, Z charging)
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- Low stock alerts (optional)
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## 4. User Stories
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### US-01: Add Battery Type
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> As a user, I want to add a new battery brand-type-chemistry combination so I can track my inventory.
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**Acceptance Criteria:**
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- Can select from predefined form factors (AA, AAA, 18650, etc.) or add custom
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- Can select from predefined chemistries (NiMH, Li-ion, etc.) or add custom
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- Can enter brand name
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- Can set initial quantity and status
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### US-02: View Inventory
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> As a user, I want to see all my batteries at a glance so I know what's available.
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**Acceptance Criteria:**
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- Shows all brand-type-chemistry combinations
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- Displays count per status (available/in-use/charging)
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- Filterable by type, brand, or chemistry
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### US-03: Assign to Device
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> As a user, I want to assign batteries to a device so I can track where they are.
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**Acceptance Criteria:**
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- Select from existing devices or create new
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- Specify quantity being assigned
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- Automatically decrements "available" count
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### US-04: Return from Device
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> As a user, I want to mark batteries as returned from a device so they're back in inventory.
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**Acceptance Criteria:**
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- Can return all or partial quantity
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- Choose destination: available or charging
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- Updates device's battery assignment
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### US-05: Manage Charging
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> As a user, I want to track which batteries are charging so I know what will be available soon.
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**Acceptance Criteria:**
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- Move batteries to charging status
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- Mark charging complete (moves to available)
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- Optional: track charging start time
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## 5. Data Model (Conceptual)
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```
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BatteryType (Form Factor)
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├── id
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├── name (AA, AAA, 18650, etc.)
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└── isCustom
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Chemistry (Battery Chemistry)
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├── id
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├── name (NiMH, Li-ion, LiFePO4, etc.)
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└── isCustom
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Brand
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├── id
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└── name
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BatteryGroup (Brand + Type + Chemistry combination)
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├── id
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├── brandId
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├── typeId
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├── chemistryId
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├── availableCount
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├── chargingCount
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└── notes
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Device
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├── id
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├── name
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└── description
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DeviceBattery (Junction)
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├── deviceId
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├── batteryGroupId
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├── quantity
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└── assignedDate
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```
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## 6. UI/UX Requirements
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### 6.1 Design Principles
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- Clean, minimal interface
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- Mobile-responsive (batteries often managed on-the-go)
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- Quick actions accessible with minimal clicks
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- Visual status indicators (color-coded)
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### 6.2 Key Screens
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1. **Dashboard** - Overview of all batteries, quick stats
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2. **Battery List** - Detailed view with filtering
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3. **Device List** - All devices and their battery assignments
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4. **Add/Edit Battery** - Form for battery management
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5. **Add/Edit Device** - Form for device management
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### 6.3 Visual Indicators
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- Green: Available
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- Blue: In Use
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- Orange/Yellow: Charging
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## 7. Non-Functional Requirements
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- **Performance**: Page load < 2s
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- **Data Persistence**: All data persisted locally or in database
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- **Offline Support**: Nice-to-have for future
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- **Browser Support**: Modern browsers (Chrome, Firefox, Safari, Edge)
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## 8. Out of Scope (v1)
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- Individual battery serial number tracking
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- Battery health/cycle tracking
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- Multi-user support
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- Barcode/QR scanning
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- Push notifications
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- Battery purchase history
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