Portable Field Charger for Microcrawlers

🔋 Portable Microcrawler Field Charger (ToolkitRC M8P Powered)

This is a compact, all-in-one portable charging solution I designed specifically for micro crawler rigs (SCX24, etc.). It’s built around the ToolkitRC M8P and powered by a 3S 4300mAh LiPo, giving you a super efficient field setup without hauling a full charging station.

The goal was simple: smallest possible footprint while still being practical in the field — and this is the most compact setup I’ve personally seen that still performs.

⚙️ Features

• Designed for ToolkitRC M8P charger
• Powered by 3S 4300mAh LiPo (XT60)
  (Currently using Gens Ace, but similar packs should fit)
• Perfect for 2S & 3S micro crawler batteries
• Enables battery rotation strategy (2–3 packs is all you need)
• No need to remove the main battery to charge
  → Balance lead + XT60 are accessible externally
• Clean, enclosed design for easy transport

⚠️ Important Note

This is a field charging solution, not a standalone charging ecosystem.

You will still need a way to charge the main 3S 4300mAh battery at home.

Most users will simply use the ToolkitRC M8P with a compatible XT60 DC power supply, allowing you to plug into a standard wall outlet and charge your larger battery just like a normal LiPo.

🔩 Build Options

Two versions included:

1. Heat-set insert version
   • Uses 2mm heat-set inserts + M2 screws
   • More durable / premium feel
2. Simple version
   • Works with self-tapping screws or standard M2 hardware
   • Easier for quick builds

🔌 Customization

• I used a short XT60 → JST adapter for charging small packs
• You can easily swap this for any connector type you prefer

🖨️ Print Settings

• Material: PETG recommended (won’t warp/melt in the sun)
• Supports: Required
• Build Plates:
  • Carbon fiber
  • Hologram
    Both work great with the provided orientation

🔗 Components

Charger (ToolkitRC M8P):
https://www.amainhobbies.com/toolkitrc-m8p-dc-lipo-lihv-life-multifunctional-battery-charger-8s-20a-600w-tlk-12800/p1530594
 

Recommended Battery: 3S 4300mah
https://www.amainhobbies.com/gens-ace-gtech-smart-3s-lihv-battery-60c-11.4v-4300mah-gea433s60t3gt/p1502571

💡 Use Case

This setup lets you:

• Stay out longer with minimal gear
• Charge on the fly between runs
• Avoid bringing bulky chargers or power supplies

I typically run 2–3 crawler batteries on rotation, and this keeps everything topped off without ever packing up.