

🛠️ Charge smart, drill hard — power protection that means business!
The DollaTek 4S 16.8V 40A BMS Protection Board is a compact, lightweight lithium battery management system designed for high-performance cordless drills. Featuring precise voltage detection and robust triple-layer protection against overcharge, over-discharge, and overcurrent, it supports continuous discharge currents up to 40A. Compatible with various lithium battery types including 18650 and polymer cells, this module ensures safe, efficient charging and discharging, making it an essential upgrade for professional-grade power tools.
| ASIN | B099DT6KYB |
| Best Sellers Rank | 79,832 in DIY & Tools ( See Top 100 in DIY & Tools ) 185 in Cordless Tool Chargers |
| Guaranteed software updates until | unknown |
| Item model number | ELA18767 |
| Manufacturer | DollaTek |
| Product Dimensions | 0.3 x 4.6 x 6 cm; 8.8 g |
M**S
Works well
Fitted to four very large car size lithium cells, as of yet nothing has gone up in smoke so all good.
R**.
Good replacement
As described.
D**Z
4s bms board
Bought this bms board to revive an old battery drill (nicad) by converting to lithium it worked a treat
C**D
Cuts Out
Disappointed used with a Makita 14 volt drill charges OK But when charged to 16 volt drill stops after a few seconds until switch off and on then repeats pattern Board voltage in high but no output until reset all battery's are the same voltage board cuts out. Used 300 ma Bulb load same results again Any answers
M**E
Fuciona bien
B**O
conforme à la description
M**E
🔋 Geeignet für 4S 18650 Li-Ion Akkus – ideal für 16,8V-Systeme 🛡️ Schutz vor Überladung, Tiefentladung, Kurzschluss & Überstrom ⚖️ Integrierter Balancer – sorgt für gleichmäßige Zellspannung 🧊 Geringer Ruhestromverbrauch & gute Wärmeableitung 🛠️ Funktioniert zuverlässig mit Bohrmaschinen (bis 80A Startstrom) 📏 Kompakte Maße (ca. 46×60×3,4 mm) – passt in viele Gehäuse 💡 Achtung: Für optimale Leistung hochwertige Zellen & dicke Kupferkabel verwenden Fazit: Für Bastler mit Anspruch eine super Wahl! 💪 Funktioniert stabil, schützt den Akku zuverlässig und ist preislich unschlagbar. Würde ich wieder kaufen! ✅
A**A
E semplice da collegare, fare bene le saldature e dimensionare l alimentazione in base al carico
D**O
le batterie al litio sono longeve ma molto delicate... bisogna caricarle con tensione costante, non superare la tensione massima e, durante l'uso, non scendere sotto la tensione minima!!! i rischi sono incendio/esplosione se si supera la tensione massima, il danneggiamento totale se si diminuisce la tensione minima (la batteria non "tiene" più la carica)!!! il modulo serve per garantire lo scopo!
Trustpilot
1 month ago
2 weeks ago