Works well. My Dremel stopped working after just a month or so--but I wasn't sure if the problem was the battery, charger, or Dremel unit. This item helped me trace the problem to the charger. So Shentec charged it's battery quickly and then charged my original Dremel battery--and now I have Dremel operation again. Honestly, it and alternatives all seem a bit expensive--and that stopped me from buying for quite awhile. But--alls well that ends well. Happy with the product.
8.6Our score 4 photosShentec 3.0Ah 12V Battery kit Compatible with Dremel 8200 8220 8300
Voltage: 12V; Capacity: 3000mAh; Type: Li-ion, Cell Type: LG. Charger Input: AC100-240V, Output: 12V / 1.5A.
About this item
- Voltage: 12V; Capacity: 3000mAh; Type: Li-ion, Cell Type: LG. Charger Input: AC100-240V, Output: 12V / 1.5A.
- Compatible with Dremel 8200 8220 rotary tools and Dremel 8300 oscillating tool.
- 12V Li-ion battery and charger compatible with Dremel 12v B812-03 B812-01 B812-02.
- Charger compatible with Dremel 12V Li-ion Battery.
- CE, FCC and RoHS certified. 100% compatible with the originals.
Voltage: 12V; Capacity: 3000mAh; Type: Li-ion, Cell Type: LG. Charger Input: AC100-240V, Output: 12V / 1.5A.
Ranked #99 in Tools & Home Improvement · 4 things we like
Quick answer The Shentec 3.0Ah 12V Battery kit Compatible scores 8.6/10 with us. Amazon owners rate it 4.3 out of 5 across 128 reviews, in line with the 4.4 average of the 456 products we track in Tools & Home Improvement. It was listed at $34.99 on Amazon when we last checked in September 2026.
Voltage: 12V; Capacity: 3000mAh; Type: Li-ion, Cell Type: LG. Charger Input: AC100-240V, Output: 12V / 1.5A. Compatible with Dremel 8200 8220 rotary tools and Dremel 8300 oscillating tool.
12V Li-ion battery and charger compatible with Dremel 12v B812-03 B812-01 B812-02. Charger compatible with Dremel 12V Li-ion Battery. CE, FCC and RoHS certified.
100% compatible with the originals.
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Product information
14 specifications| Output Voltage | 12 volts |
|---|---|
| Input Voltage | 240 volts |
| Current Rating | 1.5 A |
| Amperage | 3 A |
| Compatible Devices | Solar |
| Specification Met | RoHS |
| Color | Black |
| Brand | Shentec |
|---|---|
| Mfr Part Number | B812-02 battery&charger |
| Number of Items | 1 |
| Number of Packs | 1 |
| Item Highlight | B812-03 B812-02 B812-01 Cordless Tools,Lithium-Ion(Battery+Charger) |
| Unit Count | 1 Count |
| Model Number | B812-02 |
Pros & cons
- Voltage: 12V; Capacity: 3000mAh; Type: Li-ion, Cell Type: LG. Charger Input: AC100-240V, Output: 12V / 1.5A.
- Compatible with Dremel 8200 8220 rotary tools and Dremel 8300 oscillating tool.
- 12V Li-ion battery and charger compatible with Dremel 12v B812-03 B812-01 B812-02.
- Charger compatible with Dremel 12V Li-ion Battery.
Shentec 3.0Ah 12V Battery kit Compatible: questions & answers
Is the Shentec 3.0Ah 12V Battery kit Compatible worth buying?
Yes, it is one of the stronger picks in its group. We score the Shentec 3.0Ah 12V Battery kit Compatible 8.6 out of 10. Amazon owners rate it 4.3 out of 5 across 128 reviews, in line with the 4.4 average of the 456 products we track in Tools & Home Improvement.
How much does the Shentec 3.0Ah 12V Battery kit Compatible cost?
It was listed at $34.99 on Amazon when we last checked in September 2026. Amazon prices change daily, so use the price button on this page to see the current figure.
What are good alternatives to the Shentec 3.0Ah 12V Battery kit Compatible?
Similar, well-rated products in our catalog: SKIL PWR CORE 12 Brushless 12V 5-Tool Compact (9.0/10, 4.5 stars from 41 owners); DEWALT ATOMIC 20V MAX Lithium-Ion Cordless Oscillating (9.8/10, 5.0 stars from 40 owners); Bosch GAL12V-20 12V Battery Charger and BAT414 (9.4/10, 4.7 stars from 437 owners).
SKIL PWR CORE 12 Brushless 12V 5-Tool CompactDEWALT ATOMIC 20V MAX Lithium-Ion Cordless OscillatingBosch GAL12V-20 12V Battery Charger and BAT414
Customer reviews
All reviews on AmazonBreakdown from the 7 most helpful reviews we imported.
Works great with my Dremel
Works fine, but I don’t see any longer run time than the included 2,000mah battery…
Worked perfectly with my Dremel 8220.
I bought a Dremel without the charger at a yard sale for a steal. This charger was able to charge up the original Dremel OEM battery just fine. The included battery also runs strong.Would buy again.
Crap, does work will not fit in Dremel properly so will not work it, DO NOT purchase
Good battery, small battery. It fits just ok in my dremel not an exact fit and has to be forced in a little bit with no click to ensure it’s locked in correctly. The charger works fine and indicates with a red and green light the battery level. You get what you pay for it’s cheaper than buying a whole new charger. It’s super light weight
Customer reviews are shown as published on Amazon and are not written by Do Best Deal.













