add basic battery charging information

content/en/guides/mods/battery.md

@@ -0,0 +1,66 @@
+---
+title: "🔋 Battery"
+description: "Portable power solutions for DNS Driveby."
+lead: "Battery power solutions for your DNS Driveby."
+date: 2022-08-27T08:48:57+00:00
+lastmod: 2022-08-27T08:48:57+00:00
+draft: false
+images: []
+menu:
+  docs:
+    # parent: "get-started"
+weight: 10
+toc: true
+---
+{{< alert icon="⚠️" context="warning" text="DO NOT attempt to charge the LiPo battery directly through the D1 Mini!  Your family will die" />}}
+
+<br>
+<img src="/images/battery-mod/AAA-battery.jpeg" class="d-block w-100" alt="...">
+<br>
+
+## Official Battery Shim 
+`This product is coming soon!`
+
+## The Power Problem
+While DNS Driveby kits come with a LiPo connector, powering the kits & charging them isn't so straightforward.  In fact, it can be dangerous!
+
+**The LiPo battery JST jack passes directly to the `5V` / `USB` pin on the D1 Mini** - so if you use USB with a LiPo battery connected, it will attempt to charge it - without any regulation or protection.
+
+<br>
+<img src="/images/battery-mod/connected-lines.png" class="d-block w-100" alt="...">
+<br>
+
+## Battery Level
+Reading battery level also poses a problem.  Since there's no dedicated circuit to "switch off" the connection when the LiPo battery is too low, you can [fully discharge and damage it](https://www.jauch.com/blog/en/what-actually-happens-when-lithium-batteries-are-over-charged-or-deep-discharged/).  
+
+DNS Driveby `v1.2` kits use a resistor voltage divider to measure battery voltage, and puts the board into deep-sleep mode when the battery voltage is below `3V`.  [Read more here.]()
+
+Using a charging solution that has **over-discharge protection** would solve this issue, but these solutions do not allow you to gauge battery level.
+
+These are some nice options for reading battery level over I2C:
+- [Adafruit LC709203F Breakout](https://www.adafruit.com/product/4712)
+- [Adafruit MAX17048 Breakout](https://www.adafruit.com/product/5580)
+
+`Support for these chips coming soon.`
+
+## Charging Solutions
+##### 1. Inline charging
+There are no existing solutions I could find that offer this in a small form-factor - let alone easy + cheap to source.  But I'm designing one :)
+
+##### 2. Charge the battery separately
+**This is currently the recommended way to charge LiPo's.**  Disconnect your LiPo battery, and charge it with an external circuit like the ones listed below.  As long as your battery fits the `JST 2.0` port, and you double check the polarity, you'll be good to go!
+
+|Name|Description|Price|
+|---|---|---|
+|[Adafruit Micro Lipo Charger](https://www.adafruit.com/product/4410)|Compact charging up to 500 mAh|$6|
+|[Generic TP4056 Breakout](https://www.amazon.com/Charging-Lithium-Battery-Charger-Protection/dp/B08X6G26Q8/ref=sr_1_1?crid=XKXTNEH4PT79&keywords=tp4056&qid=1700888181&sprefix=tp4056%2Caps%2C160&sr=8-1)|Extremely ubiquitous LiPo charger|$1|
+
+##### 3. Wemos Battery Shield
+Don't let this board decieve you, its actually the worst charging solution I've tried.  
+
+While it comes in D1 Mini form factor (meaning you can stack it on your existing D1 Mini), it uses a slightly-too-large `JST 2.54` connector that doesn't securely hold the battery, and also requires you to charge through a separate USB port (and it's MicroUSB, eww).
+
+<br>
+<img src="/images/battery-mod/wemos-battery-shield.jpg" class="d-block w-100" alt="...">
+<br>
+

content/en/guides/mods/deep-sleep.md

@@ -1,5 +1,5 @@
 ---
-title: "Deep Sleep"
+title: "💤 Deep Sleep"
 description: "Using low-power mode on your DNS Driveby Kit"
 lead: "Using low-power mode on your DNS Driveby Kit 🔋"
 date: 2022-08-27T08:48:57+00:00

content/en/guides/mods/screen.md

@@ -1,5 +1,5 @@
 ---
-title: "Screen"
+title: "🖵 Screen"
 description: "Adding a screen to your wardriving kit!"
 # lead: "Adding a screen to your wardriving kit!"
 date: 2022-08-27T08:48:57+00:00