Tech-dat/cable-dat/AWG-wires-dat/AWG-wires-dat.md
... ...
@@ -0,0 +1,23 @@
1
+
2
+# AWG-wires-dat
3
+
4
+# AWG Wire Specifications
5
+
6
+| **AWG Size** | **Dia (mm)** | **Cross-Sect (mm²)** | **Res (Ohms/km)** | **Max Current (A)** (Chassis Wiring) | **Max Current (A)** (Power Transmission) |
7
+| ------------ | ------------ | -------------------- | ----------------- | ------------------------------------ | ---------------------------------------- |
8
+| 10 | 2.59 | 5.26 | 3.28 | 55 | 15 |
9
+| 12 | 2.05 | 3.31 | 5.21 | 41 | 9.3 |
10
+| 14 | 1.63 | 2.08 | 8.29 | 32 | 5.9 |
11
+| 16 | 1.29 | 1.31 | 13.2 | 22 | 3.7 |
12
+| 18 | 1.02 | 0.823 | 21.0 | 16 | 2.3 |
13
+| 20 | 0.812 | 0.518 | 33.5 | 11 | 1.5 |
14
+| 22 | 0.644 | 0.326 | 53.2 | 7 | 0.92 |
15
+| 24 | 0.511 | 0.205 | 84.2 | 3.5 | 0.577 |
16
+| 26 | 0.405 | 0.129 | 133 | 2.2 | 0.361 |
17
+| 28 | 0.321 | 0.081 | 212 | 1.4 | 0.226 |
18
+| 30 | 0.255 | 0.051 | 338 | 0.86 | 0.142 |
19
+
20
+### Notes:
21
+- **Chassis Wiring**: Refers to wires used in open air, where heat dissipation is better.
22
+- **Power Transmission**: Refers to wires used in bundles or conduits, where heat dissipation is limited.
23
+- Current ratings are approximate and depend on insulation type, ambient temperature, and application.
... ...
\ No newline at end of file
Tech-dat/power-dat/battery-dat/battery-dat.md
... ...
@@ -2,12 +2,16 @@
2 2
3 3
# battery-dat
4 4
5
-- [[rechargerable-battery-dat]] - [[lithium-battery-dat]] - [[lead-acid-battery-dat]]
5
+- [[rechargerable-battery-dat]] - [[lithium-battery-dat]] - [[lead-acid-battery-dat]] - [[LFP-dat]]
6 6
7 7
- [[battery-holder-dat]]
8 8
9 9
- [[alkaline-battery-dat]] - [[9V-battery-dat]]
10 10
11
+- [[battery-soldering-dat]]
12
+
13
+- battery isolation == rack (specially when have movement or vibration), Insulating Gasket
14
+
11 15
## coin battery dat
12 16
13 17
CR2030 provides up to 3V 210~225 mAh, and CR1220 provides up to 3V 38mAh power.
... ...
@@ -16,6 +20,22 @@ Both button cells provide very low discharge rate that can work for 1-3 years.
16 20
17 21
18 22
23
+## 🔋 Battery Specifications
24
+
25
+| Specification | Description | Example / Notes |
26
+| ----------------------------- | --------------------------------------------------------------------- | ------------------------------------------ |
27
+| **Nominal Voltage (V)** | Average voltage during discharge | 3.7V (Li-ion), 1.2V (NiMH) |
28
+| **Capacity (mAh or Ah)** | Amount of charge the battery holds | 2200mAh = 2.2A for 1 hour |
29
+| **Discharge Rate (C-Rating)** | Multiplier of capacity for safe discharge rate | 10C = 10 × Capacity (e.g. 10A for 1000mAh) |
30
+| **Burst Discharge Rate** | Max short-duration current | 20C = 20 × Capacity |
31
+| **Max Continuous Discharge** | Maximum current battery can supply continuously | Capacity × C-rating |
32
+| **Internal Resistance (mΩ)** | Resistance inside the cell (lower is better) | 5–50 mΩ |
33
+| **Charge Rate (C or A)** | Max safe charging current | 1C for 2200mAh = 2.2A |
34
+| **Cycle Life** | Number of charge/discharge cycles before capacity drops (e.g. to 80%) | 300–1000 cycles |
35
+| **Cutoff Voltage** | Minimum safe voltage during discharge | 3.0V (Li-ion) |
36
+| **Max Charge Voltage** | Voltage at full charge | 4.2V per cell (Li-ion) |
37
+| **Temperature Range (°C)** | Safe operating/charging temperature range | -20°C to 60°C (discharge), 0–45°C (charge) |
38
+
19 39
20 40
21 41
## Power battery
... ...
@@ -46,18 +66,18 @@ Both button cells provide very low discharge rate that can work for 1-3 years.
46 66
## AA vs. AAA
47 67
48 68
49
-| **Feature** | **AA Battery** | **AAA Battery** |
50
-|----------------------|--------------------------------------|------------------------------------|
51
-| **Size** | 14.5 mm (diameter) x 50.5 mm (length) | 10.5 mm (diameter) x 44.5 mm (length) |
52
-| **Voltage** | 1.5V (Alkaline) / 1.2V (Rechargeable NiMH) | 1.5V (Alkaline) / 1.2V (Rechargeable NiMH) |
53
-| **Capacity** | 2000-3000 mAh (Alkaline) | 600-1200 mAh (Alkaline) |
54
-| **Current Capability**| 700-1000 mA sustained | 300-500 mA sustained |
55
-| **Typical Use** | Medium to high-power devices: flashlights, toys, wireless mice, clocks | Low-power devices: remote controls, small toys, wireless keyboards |
56
-| **Weight** | Approx. 23 g (Alkaline) | Approx. 11.5 g (Alkaline) |
57
-| **Cost** | Generally slightly more expensive per battery | Slightly less expensive per battery |
58
-| **Energy Density** | Higher capacity and energy per unit | Lower capacity due to smaller size |
59
-| **Runtime** | Longer due to higher capacity | Shorter due to lower capacity |
60
-| **Features** | Ideal for devices that require more power and have higher current demands | Ideal for smaller devices that require less power and a more compact size |
69
+| **Feature** | **AA Battery** | **AAA Battery** |
70
+| ---------------------- | ------------------------------------------------------------------------- | ------------------------------------------------------------------------- |
71
+| **Size** | 14.5 mm (diameter) x 50.5 mm (length) | 10.5 mm (diameter) x 44.5 mm (length) |
72
+| **Voltage** | 1.5V (Alkaline) / 1.2V (Rechargeable NiMH) | 1.5V (Alkaline) / 1.2V (Rechargeable NiMH) |
73
+| **Capacity** | 2000-3000 mAh (Alkaline) | 600-1200 mAh (Alkaline) |
74
+| **Current Capability** | 700-1000 mA sustained | 300-500 mA sustained |
75
+| **Typical Use** | Medium to high-power devices: flashlights, toys, wireless mice, clocks | Low-power devices: remote controls, small toys, wireless keyboards |
76
+| **Weight** | Approx. 23 g (Alkaline) | Approx. 11.5 g (Alkaline) |
77
+| **Cost** | Generally slightly more expensive per battery | Slightly less expensive per battery |
78
+| **Energy Density** | Higher capacity and energy per unit | Lower capacity due to smaller size |
79
+| **Runtime** | Longer due to higher capacity | Shorter due to lower capacity |
80
+| **Features** | Ideal for devices that require more power and have higher current demands | Ideal for smaller devices that require less power and a more compact size |
61 81
62 82
63 83
### Key Differences:
Tech-dat/power-dat/battery-dat/battery-soldering-dat/2025-05-08-01-10-00.png
... ...
Binary files /dev/null and b/Tech-dat/power-dat/battery-dat/battery-soldering-dat/2025-05-08-01-10-00.png differ
Tech-dat/power-dat/battery-dat/battery-soldering-dat/battery-soldering-dat.md
... ...
@@ -5,6 +5,17 @@
5 5
6 6
Support spot welding of nickel sheets, iron sheets, stainless steel sheets and other materials. Strong and versatile, strong welding, excellent welding points
7 7
8
+
9
+![](2025-05-08-01-10-00.png)
10
+
11
+## stack soldering
12
+
13
+The green part is Insulating Gasket
14
+
15
+Copper sheet at the bottom, nickel-plated strip on top, stacked together for welding.
16
+
17
+
18
+
8 19
## ref
9 20
10 21
- [[battery]] - [[18650]]
... ...
\ No newline at end of file
Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/active-battery-balancing-board-dat/active-battery-balancing-board-dat.md
... ...
@@ -0,0 +1,11 @@
1
+
2
+# active-battery-balancing-board-dat
3
+
4
+An **active battery balancing board** for lithium batteries ensures that all cells in a battery pack maintain the same voltage level during charging and discharging. It actively redistributes energy between cells, transferring charge from higher-voltage cells to lower-voltage ones. This helps:
5
+
6
+- **Improve Battery Life**: Prevents overcharging or over-discharging of individual cells, reducing wear and extending the overall lifespan of the battery pack.
7
+- **Enhance Performance**: Ensures consistent voltage across cells, improving the efficiency and reliability of the battery.
8
+- **Increase Safety**: Reduces the risk of overheating, overcharging, or cell failure due to imbalances.
9
+- **Optimize Capacity**: Maximizes the usable capacity of the battery pack by ensuring all cells are equally charged.
10
+
11
+This is especially important in applications like electric vehicles, power tools, and energy storage systems.
... ...
\ No newline at end of file
Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/li-battery-size-dat/26650-dat/2025-05-08-01-12-15.png
... ...
Binary files /dev/null and b/Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/li-battery-size-dat/26650-dat/2025-05-08-01-12-15.png differ
Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/li-battery-size-dat/26650-dat/2025-05-08-01-12-27.png
... ...
Binary files /dev/null and b/Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/li-battery-size-dat/26650-dat/2025-05-08-01-12-27.png differ
Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/li-battery-size-dat/26650-dat/26650-dat.md
... ...
@@ -0,0 +1,15 @@
1
+
2
+# 26650-dat
3
+
4
+
5
+
6
+## motorbike battery
7
+
8
+- 12-14 milliohm internal resistance
9
+- [[active-battery-balancing-board-dat]]
10
+- internal 4x2 = 14.5 V
11
+- 10C / Instant discharge 20C
12
+
13
+![](2025-05-08-01-12-15.png)
14
+
15
+![](2025-05-08-01-12-27.png)
... ...
\ No newline at end of file
Tech-dat/power-dat/battery-dat/rechargerable-battery-dat/lithium-battery-dat/lithium-battery-dat.md
... ...
@@ -1,9 +1,13 @@
1 1
2 2
# lithium-battery-dat
3 3
4
-
4
+## info
5
+
5 6
- [[BMS-dat]] - [[battery-charger-dat]]
6 7
8
+- [[active-battery-balancing-board-dat]] - [[battery-soldering-dat]]
9
+
10
+- high current wires == [[AWG-wires-dat]]
7 11
8 12
## Classification Summary
9 13
... ...
@@ -11,7 +15,7 @@ By Electrode Materials - [[LFP-dat]] - [[Ternary-Lithium-Battery-dat]]
11 15
12 16
By Electrode Materials Status - [[li-ion-battery-dat]] - [[lipo-battery-dat]]
13 17
14
-By size - [[18650-dat]]
18
+By size - [[18650-dat]] - [[26650-dat]]
15 19
16 20
17 21
### By Apps