Chip-cn-dat/injoinic-dat/IP2326-dat/2026-03-13-15-41-01.png
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Chip-cn-dat/injoinic-dat/IP2326-dat/IP2326-dat.md
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@@ -3,9 +3,9 @@
3 3
4 4
- IP2326 - 支持 15W 快充的 2 节/3 节串联锂电池升压充电 IC == Boost Charging IC for 2/3 Serial Lithium Battery With 15W Fast Charge
5 5
6
-- [[passive-BMS-dat]]
6
+- [[BMS-passive-dat]]
7 7
8
-- [[battery-2s-dat]] - [[battery-3s-dat]]
8
+- [[battery-2s-dat]] - [[battery-3s-dat]] - [[battery-dat]]
9 9
10 10
- [[IP2326-dat]] - [[injoinic-dat]]
11 11
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@@ -34,6 +34,13 @@ SCH
34 34
35 35
![](2026-02-12-18-36-51.png)
36 36
37
+
38
+## board
39
+
40
+![](2026-03-13-15-41-01.png)
41
+
42
+
43
+
37 44
## ref
38 45
39 46
- [[IP2326]]
battery-dat/battery-BMS-dat/BMS-passive-dat/2025-09-11-20-17-24.png
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battery-dat/battery-BMS-dat/BMS-passive-dat/BMS-passive-dat.md
... ...
@@ -0,0 +1,69 @@
1
+
2
+# passive-BMS-dat
3
+
4
+
5
+- [[BMS-dat]]
6
+
7
+- [[CN3305-dat]] == 2S ~ 4S - [[CONSONANCE-dat]]
8
+
9
+
10
+
11
+- [[2S-lithium-battery-charger-dat]]
12
+
13
+
14
+How Passive Balancing Works: "Bleeding off the Top"
15
+A Passive BMS does not move energy from a full cell to an empty one. Instead, it "wastes" excess energy from the strongest cell to let the weakest one catch up.
16
+
17
+1. **Monitoring:** The BMS monitors Cell 1 and Cell 2 individually.
18
+2. **The Trigger:** During charging, if Cell 1 hits **4.2V** but Cell 2 is only at **4.0V**, the BMS identifies that Cell 1 is full.
19
+3. **The Bypass:** The BMS switches on a small **discharge resistor** (the "passive" component) connected in parallel to Cell 1.
20
+4. **Heat Dissipation:** This resistor "bleeds off" or burns the charging current as **heat**. This prevents Cell 1 from overcharging while allowing the charger to continue pushing current into the lower Cell 2.
21
+
22
+
23
+
24
+---
25
+
26
+### 2. Core Functions of a 2S Passive BMS
27
+Beyond balancing, a Passive BMS provides four critical safety layers:
28
+
29
+* **Overcharge Protection:** Cuts off the charger if any cell exceeds ~4.25V.
30
+* **Over-discharge Protection:** Cuts off the load (your motors) if any cell drops below ~2.5V–3.0V.
31
+* **Over-current Protection:** Shuts down if your scooter motor draws more amps than the battery can safely handle.
32
+* **Short-circuit Protection:** Instantly kills the output if the (+) and (-) wires touch.
33
+
34
+---
35
+
36
+### 3. Pros and Cons for DIY Projects
37
+
38
+| Feature | **Passive BMS** | **Active BMS** |
39
+| :------------------ | :---------------------------------------- | :-------------------------------------------- |
40
+| **Cost** | Very inexpensive; standard for 2S/3S. | Expensive and harder to find for small packs. |
41
+| **Size** | Small and easy to fit in a Rover chassis. | Bulky (uses inductors/capacitors). |
42
+| **Efficiency** | Low (wastes energy as heat). | High (transfers energy between cells). |
43
+| **Balancing Speed** | Slow (typically 30mA - 100mA). | Fast. |
44
+
45
+
46
+
47
+## passivs BMS with balance
48
+
49
+![](2026-03-13-15-40-00.png)
50
+
51
+## common passive BMS charger wring
52
+
53
+![](2025-09-11-20-17-24.png)
54
+
55
+
56
+
57
+- [[injoinic-dat]] - [[IP2326-dat]]
58
+
59
+
60
+![](2025-09-11-20-23-46.png)
61
+
62
+
63
+
64
+
65
+
66
+
67
+## ref
68
+
69
+- [[BMS-dat]]
... ...
\ No newline at end of file
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battery-dat/battery-BMS-dat/passive-BMS-dat/2S-lithium-battery-charger-dat/2S-lithium-battery-charger-dat.md
... ...
@@ -1,41 +0,0 @@
1
-
2
-# 2S-lithium-battery-charger-dat
3
-
4
-
5
-
6
-- [[tp-dat]]
7
-
8
-
9
-## IF the 2S pack battery does NOT have the BMS board
10
-
11
-These chargers are designed to charge 2S packs with balanced charging and proper voltage/current control.
12
-
13
-🔧 Example:
14
-
15
-IMAX B6 or similar smart chargers
16
-
17
-Connect via the main power plug and balance plug (JST-XH, for example)
18
-
19
-
20
-## IF the 2S pack battery has the BMS board
21
-
22
-== BMS (Battery Management System) + DC Power Supply
23
-
24
-
25
-- need 2S BMS == 2S 锂电池保护板（BMS）
26
-
27
-Example setup:
28
-
29
-Use an 8.4V Li-ion charger (e.g., 8.4V/1A wall charger)
30
-
31
-The BMS will:
32
-
33
-- Protect against overcharge
34
-- Balance the cells (if it's a balancing BMS)
35
-
36
-
37
-
38
-
39
-## ref
40
-
41
-- [[battery-dat]]
... ...
\ No newline at end of file
battery-dat/battery-BMS-dat/passive-BMS-dat/passive-BMS-dat.md
... ...
@@ -1,33 +0,0 @@
1
-
2
-# passive-BMS-dat
3
-
4
-
5
-- [[BMS-dat]]
6
-
7
-- [[CN3305-dat]] == 2S ~ 4S - [[CONSONANCE-dat]]
8
-
9
-
10
-
11
-- [[2S-lithium-battery-charger-dat]]
12
-
13
-
14
-
15
-## common passive BMS charger
16
-
17
-![](2025-09-11-20-17-24.png)
18
-
19
-
20
-
21
-- [[injoinic-dat]] - [[IP2326-dat]]
22
-
23
-
24
-![](2025-09-11-20-23-46.png)
25
-
26
-
27
-
28
-
29
-
30
-
31
-## ref
32
-
33
-- [[BMS-dat]]
... ...
\ No newline at end of file
battery-dat/battery-charger-dat/battery-charger-2s-dat/battery-charger-2s-dat.md
... ...
@@ -2,6 +2,74 @@
2 2
3 3
# battery-charger-2s-dat
4 4
5
+- [[battery-2s-dat]] - [[battery-protector-2s-dat]] - [[battery-charger-2s-dat]]
6
+
7
+- [[battery-charger-dat]]
8
+
9
+- [[IP2326-dat]]
10
+
11
+
12
+
13
+
14
+# 2S-lithium-battery-charger-dat
15
+
16
+
17
+
18
+- [[tp-dat]]
19
+
20
+
21
+`Removable Battery Pack with two different connectors` (or a "breakout" harness). This is a common strategy in hobbyist electronics, but it requires a very specific connector setup to ensure you don't accidentally short the batteries.
22
+
23
+For this to work, the batteries cannot be permanently wired in series inside the pack. Instead, you bring out all 4 wires (2 from each battery) to your ports.
24
+
25
+The Charging Port (Parallel)
26
+
27
+You wire the two positives together and the two negatives together to a single plug.
28
+
29
+Warning: If you plug this into a charger while the "Series Port" is also connected to something, you will cause a short. You must physically unplug the battery from the scooter before charging.
30
+
31
+The System Port (Series)
32
+
33
+This port only becomes "Series" when you plug it into the scooter. The scooter's connector acts as the "bridge" that links the Negative of Battery A to the Positive of Battery B.
34
+
35
+
36
+## IF the 2S pack battery does NOT have the BMS board
37
+
38
+These chargers are designed to charge 2S packs with balanced charging and proper voltage/current control.
39
+
40
+🔧 Example:
41
+
42
+IMAX B6 or similar smart chargers
43
+
44
+Connect via the main power plug and balance plug (JST-XH, for example)
45
+
46
+
47
+## IF the 2S pack battery has the BMS board
48
+
49
+== BMS (Battery Management System) + DC Power Supply
50
+
51
+
52
+- need 2S BMS == 2S 锂电池保护板（BMS）
53
+
54
+Example setup:
55
+
56
+Use an 8.4V Li-ion charger (e.g., 8.4V/1A wall charger)
57
+
58
+The BMS will:
59
+
60
+- Protect against overcharge
61
+- Balance the cells (if it's a balancing BMS)
62
+
63
+
64
+
65
+
66
+## ref
67
+
68
+- [[battery-dat]]
69
+
70
+
71
+## options
72
+
5 73
### 1. The USB-C "Boost" Solution: IP2326
6 74
This is arguably the best modern chip for 2S DIY projects. It takes a standard **5V USB input** and "boosts" it to 8.4V.
7 75
battery-dat/battery-charger-dat/battery-charger-dat.md
... ...
@@ -1,7 +1,7 @@
1 1
# battery-charge-dat
2 2
3 3
4
-- [- [[battery-protector-1s-dat]] - [[battery-charger-1s-dat]] - [[battery-1s-dat]]
4
+- [[battery-protector-1s-dat]] - [[battery-charger-1s-dat]] - [[battery-1s-dat]]
5 5
6 6
- [[battery-protector-dat]] - [[battery-charger-dat]] - [[battery-packs-dat]]
7 7
... ...
@@ -23,7 +23,7 @@ The most following charger options are for the lithium-ion battery
23 23
- [[battery-1S-dat]] - [[battery-2S-dat]] - [[battery-3S-dat]] - [[battery-4S-dat]] - [[battery-5S-dat]] - [[battery-packs-dat]]
24 24
25 25
26
-- [[BMS-dat]]
26
+- [[battery-BMS-dat]] - [[BMS-passive-dat]]
27 27
28 28
- [[battery-pack-dat]]
29 29
battery-dat/battery-dat.md
... ...
@@ -22,10 +22,11 @@
22 22
23 23
- [[voltage-low-alarm-dat]] - [[voltage-dat]]
24 24
25
+
25 26
## types
26 27
27 28
28
-- [[battery-size-dat]] - [[18650-dat]] - [[26650-dat]]
29
+- [[battery-size-dat]] - [[18650-dat]] - [[18350-dat]] - [[26650-dat]] - [[14450-dat]]
29 30
30 31
31 32
- [[battery-dat]]
battery-dat/battery-holder-dat/battery-holder-dat.md
... ...
@@ -1,8 +1,11 @@
1 1
2 2
# battery-holder-dat
3 3
4
-- [[CR2032-holder-dat]] - [[AA-battery-holder-dat]] - [[18650-battery-holder-dat]]
4
+- [[CR2032-holder-dat]] - [[AA-battery-holder-dat]]
5 5
6
+- [[battery-size-dat]] - [[18650-dat]] - [[18350-dat]] - [[26650-dat]] - [[14450-dat]]
7
+
8
+- [[18650-battery-holder-dat]]
6 9
7 10
8 11
## boards