For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
The Kerpu CP01 (5000mAh) Pocket Spot Welder delivers affordability, portability, and reliable performance in one compact tool. While branded as Kerpu, this unit is manufactured by AWithZ, the same trusted maker of the official AWithZ CP01 model.
Perfect for beginners and hobbyists, the CP01 offers 11 adjustable output levels, intelligent temperature protection, and a powerful 5000mAh high-discharge battery — making it a dependable entry-level welder for nickel, stainless steel, iron, and aluminum strips.
Key Features
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Kerpu Brand – AWithZ Quality
Branded Kerpu but made by AWithZ, identical to the CP01 (5000mAh) model trusted by battery builders worldwide. -
Beginner-Friendly & Affordable
Ideal entry-level welder for DIY battery building, pack repairs, and small-scale projects. -
11 Power Settings
Adjust welding strength for different materials and thicknesses. -
Dual Functionality
Spot welder plus 5V/2.4A USB power bank for charging devices. -
Fast Recharge
Fully charges in 2 hours via USB Type-C (2A input). -
Flexible Welding Pen
40cm (15.74”) red copper pen for comfortable, accurate operation. -
Smart Safety Features
Temperature-controlled auto shut-off at 60°C (140°F). -
Versatile Welding Capability
Handles nickel (0.1–0.25mm) and aluminum (0.01–0.3mm) with strong, clean welds.
Specifications
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Brand: Kerpu (Made by AWithZ)
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Model: CP01
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Battery Type: Rechargeable polymer lithium battery
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Capacity: 5000mAh
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Max Output Voltage: 4.2V
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Max Output Current: 650A
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Design Current: 1000A
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Charging Port: USB Type-C
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Charging Input: 5V/2.1A
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USB Output: 5V/2.4A
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Dimensions: 10.2 × 8.4 × 2.8 cm (4.01 × 3.3 × 1.1 in)
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Pen Cable Length: 40cm (15.74”)
Applications
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18650 / 26650 / 32650 lithium cells
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Nickel-hydrogen and cadmium-nickel batteries
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E-bike packs, portable electronics, and DIY power projects
Package Includes
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Kerpu CP01 Pocket Spot Welder (Made by AWithZ)
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40cm Red Copper Welding Pen
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USB Type-C Charging Cable
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User Manual
Why Buy from DIY500AMP.COM
At DIY500AMP, we test the tools we sell. The Kerpu CP01 made by AWithZ is one of the best affordable portable welders for beginners, and we back it with our expertise, community, and real-world experience.
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
Payment and Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Wow, these cells are great!
I purchased some of these tabless cells to try on my 1S 3" HD Toothpick drone build, and, albeit a bit heavy for 1S, it flies pretty well. Not a freestyle monster, but an endurance beast with decent send. These cells shrug off the demands of a BETAFPV Matrix HD AIO flight controller/12A ESC and some 1202.5 11000KV motors. I'm getting 15+ minutes of speedy flight time from a single cell trying not to go below 3.2V, and about 20+ minutes cruising. Love these cells and will definitely buy more when time comes, only from DIY500AMP, who are terrific!
VN in AZ
EVE 30PL 18650 3000mAh 60A Battery Cell - Tabless
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