I bought an electric strimmer a few days ago and just assembled it and taken it for a test.

It's very impressive, simply decimates anything that gets in its way, even stems (woody) like 1/2" thick, it doesn't care.

The impressive thing to me is the battery, it is an 80v battery!

Maybe I can use this battery to power up my 1920s radio !



Greenworks 80V 16" Brushless Cordless String Trimmer

 

It should do the job but be careful - that is a LETHAL battery!

 

It should do the job but be careful - that is a LETHAL battery!

Yes, I was thinking that too, huge voltage for a battery. I was advised to "forget the 25v ones, look for a 40v strimmer" then I found out that there are now 80v models.

It is very impressive, simply shreds anything it touches, I'm wearing goggles for this and making sure my dogs are not in the yard - just in case, it would likely cut off a small dogs leg, not simply lacerate it.

 

What's so special about the voltage? A 25V battery pack with the same energy storage wouldn't be any bigger. The only advantage is that the manufacturer saved a few pence on copper wire.

 

What's so special about the voltage?

Likely means a smaller motor.

 

Likely means a smaller motor.

I could understand that a brushed motor would need a larger commutator to deal with the extra current, but a brushless motor? Perhaps because the packing density of thicker wire would not be so good.

 

What's so special about the voltage? A 25V battery pack with the same energy storage wouldn't be any bigger. The only advantage is that the manufacturer saved a few pence on copper wire.

Well I've not ever seen a domestic appliance/tool using an 80v battery before.

 

My Lawnmower, Weed eater and blower are different size 56V batteries plenty of speed and power. I’m so glad I don’t pull start any more.

kv

 

I have the same brand in their self propelled lawnmower model. 80V battery (actual voltage is 72V). It works fine except in tall wet grass, motor tends to shut down due to overheating. It resets after about 30 seconds... Not too bad. Battery (4Ah) lasts a long time otherwise. Lawnmower is a dual battery model, switches to other battery when first one is too low.
EDIT: I see they now have an electric snowblower that uses the 80V battery. I wonder how much power that would really have, especially in wet snow...