Battery Chainsaw?

[Doug Tait]

6 hours ago, Yorkie064 said:

Sorry guys just getting to grips with technology  I volunteer with a charity and have just purchased a Sthil  220C saw with a 300s battery but even just  processing timber the battery from fully charged only lasts about 20min. There was no info with saw that batteries should be fully charged and drained etc before use so are we doing something wrong or is this about right? We daren't attempt a tree felling even under 300mm

Appreciate any advice/comments

 

Can't really say if 20mins is a decent or poor run time, depends what you mean by processing timber.

We use them for stop/start cutting of branches at the chipper or occasionally crosscutting smaller limbs. Haven't timed it but the batteries last fine.

I'd think continuous cutting of larger stuff would be the hardest on battery life. It'll help anyway to keep the chain properly sharp.

[Stere]

Processing timber as in repeated crosscutting decent diameter logs etc is probably what battery saws are least suited for.

Edited February 1, 2023 by Stere

[slim reaper]

13 hours ago, scbk said:

I assume when you say watts you're meaning watt hours?

 

It doesn't matter what brand it is, they will all cost much and such the same to charge, for the power that they deliver.

 

If you look on the bottom of an 18v 5ah battery it will usually be stamped 90wh. 18 x 5 = 90

Add on a few watts for the charger itself, and there's your 100 watt hours (0.1kwh) to recharge.

 

So a husky bli300 battery which is 36v 9.4ah, is 36 x 9.4 = 338wh

Yes watt hours but the purpose of my post was to show how cheap it is to charge batteries giving real examples using what I have to hand 

I see in one post you referred to "rounding up" , probably done because the fully charged voltage of an 18 volt  battery is 20 volts .