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battery-dat/battery-BMS-dat/battery-protector-2s-dat/battery-protector-2s-dat.md
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1
+
2
+
3
+# battery-protector-2s-dat
4
+
5
+- [[battery-dat]]
6
+
7
+- [[battery-2s-dat]] - [[battery-protector-2s-dat]] - [[battery-charger-2s-dat]]
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+
9
+
10
+
11
+## Dedicated 2S Protection ICs (Hardware-only)
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+
13
+These chips do not require programming. They monitor the voltage of each cell and control external MOSFETs to cut power if a fault occurs.
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+
15
+`HY2120` Series: This is one of the most common "entry-level" 2S protection chips. It features high-accuracy voltage detection and low current consumption.
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+
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+Best for: Small DIY projects or simple battery packs where you just need "Overcharge, Over-discharge, and Short Circuit" protection.
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+
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+`S-8232` Series (ABLIC): A industry-standard, high-precision protection IC. It is often found in commercial laptop batteries and power tools.
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+
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+Best for: High-reliability applications.
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+
23
+`CW1232` (CellWise): Specifically designed for 2-cell series lithium-ion/polymer batteries. It is robust and widely used in the Chinese hobbyist market for 2S packs. - [[cellwise-dat]]
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+
25
+## Integrated "All-in-One" BMS Controllers
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+
27
+If you want to know the exact percentage (State of Charge) or the health of your scooter’s battery via a microcontroller (like an Arduino or ESP32), you need a chip with an I2C or SMBus interface.
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+
29
+`BQ28Z610` (Texas Instruments): A very advanced "Gas Gauge" and protection solution. It handles balancing, protection, and provides incredibly accurate capacity reporting. - [[TI-battery-dat]]
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+
31
+Best for: The human-carrying scooter project where knowing the remaining range is critical.
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+
33
+`MAX17262` (Maxim/Analog Devices): While often used for 1S, its siblings in the MAX series handle multi-cell. These use "ModelGauge m5" technology, which means you don't need to perform a full discharge cycle to calibrate the battery percentage. - [[analog-device-dat]]
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+
35
+
36
+
37
+
38
+## BMS
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+
40
+![](2026-02-12-20-52-35.png)
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+
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+![](2026-02-12-21-10-52.png)
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+
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+
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+![](2026-02-12-17-58-35.png)
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+
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+
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+
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+
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+
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+
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+![](2026-02-12-17-58-49.png)
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+
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+
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+## wiring
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+
57
+![](2026-02-12-17-59-08.png)
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+
59
+## ref
60
+
battery-dat/battery-dat.md
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@@ -6,6 +6,8 @@
6 6
7 7
- [[battery-tools-dat]]
8 8
9
+
10
+
9 11
## BMS
10 12
11 13
- [[battery-BMS-dat]] - [[active-BMS-dat]] - [[passive-BMS-dat]] - [[protection-battery-dat]] - [[protection-dat]]
... ...
@@ -18,7 +20,7 @@
18 20
19 21
- [[sensor-voltage-dat]]
20 22
21
-
23
+- [[voltage-low-alarm-dat]] - [[voltage-dat]]
22 24
23 25
## types
24 26
... ...
@@ -35,11 +37,14 @@
35 37
- [[battery-protection-dat]]
36 38
37 39
38
-- [[li-battery-dat]] - [[li-battery-app-dat]] - [[18650-dat]]
40
+- [[battery-li-dat]] - [[li-battery-app-dat]] - [[18650-dat]]
39 41
40 42
41 43
- [[battery-pack-dat]] - [[battery-holder-dat]] - [[battery-packs-dat]]
42 44
45
+- [[battery-1s-dat]] - [[battery-2s-dat]] - [[battery-3s-dat]] - [[battery-4s-dat]] - [[battery-5s-dat]] - [[battery-6s-dat]]
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+
47
+
43 48
- [[battery-charger-dat]] - [[2S-lithium-battery-charger-dat]] - [[battery-discharge-dat]]
44 49
45 50
- [[battery-alkaline-dat]] - [[battery-9V-dat]]
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battery-dat/battery-pack-dat/battery-packs-dat/battery-2S-dat/battery-2S-dat.md
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@@ -2,6 +2,9 @@
2 2
3 3
- [[battery-pack-dat]]
4 4
5
+- [[2S-lithium-battery-charger-dat]]
6
+
7
+
5 8
6 9
## charge solutions
7 10
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@@ -13,26 +16,10 @@
13 16
14 17
- [[hycontek-dat]]
15 18
16
-## BMS
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-
18
-![](2026-02-12-20-52-35.png)
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-
20
-![](2026-02-12-21-10-52.png)
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-
22
-
23
-![](2026-02-12-17-58-35.png)
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-
25
-
26
-
27
-
28
-
29
-
30
-![](2026-02-12-17-58-49.png)
31
-
19
+- [[battery-protector-dat]] - [[battery-protector-2s-dat]]
32 20
33
-## wiring
21
+- [[battery-charger-dat]] - [[battery-charger-2s-dat]]
34 22
35
-![](2026-02-12-17-59-08.png)
36 23
37 24
38 25
power-dat/voltage-dat/voltage-dat.md
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@@ -9,7 +9,7 @@
9 9
- [[voltage-level-dat]]
10 10
11 11
12
-
12
+- [[voltage-low-alarm-dat]] - [[voltage-dat]]
13 13
14 14
15 15
power-dat/voltage-dat/voltage-low-alarm-dat/voltage-low-alarm-dat.md
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@@ -0,0 +1,15 @@
1
+
2
+
3
+# voltage-low-alarm-dat
4
+
5
+Low-Voltage Alarm (LVA)
6
+
7
+For DIY projects where you don't want the battery to suddenly cut off (like a drone or a robot), a Low-Voltage Alarm is common.
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+
9
+It plugs into the balance lead and displays the voltage of each cell.
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+
11
+It emits a loud beep when any cell hits a dangerous threshold (e.g., 3.3V), signaling you to manually turn off the device.
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+
13
+
14
+## ref
15
+