Battery size for angle grinder IAN 485600_2501 Parkside (Lidi)

[ericmark]

I doubt you will get much umpf with a 2 amp

2 amps is not the same as 2 amp/hour. The Parkside 4 Ah Smart battery is limited in the software to 50 amps discharge current, so 1 kW which is likely well over the rating of the motor, but clearly not 2 amps by any stretch of the imagination.

 

[catlad]

Looks like you are going to have both sizes now, so you can test it yourself.

 

[ericmark]

Yes, so now the big question, if I have used a 2 Ah battery before starting my gardening, so left with an odd number (1 or 3) 2 Ah batteries charged, can I use the 4 Ah while waiting for the 2 Ah to recharge? What happens if I put a 2 Ah and 4 Ah battery in the same garden tool?

Can't believe that eBay price, think lot new was around £200, shows a single battery charger, what's the point in that? But the picture was to show the tool, which uses two batteries at a time.

 

[big-all]

Yes, so now the big question, if I have used a 2 Ah battery before starting my gardening, so left with an odd number (1 or 3) 2 Ah batteries charged, can I use the 4 Ah while waiting for the 2 Ah to recharge? What happens if I put a 2 Ah and 4 Ah battery in the same garden tool?

View attachment 406575Can't believe that eBay price, think lot new was around £200, shows a single battery charger, what's the point in that? But the picture was to show the tool, which uses two batteries at a time.

you get random stupidness like that on ebay

as for using a 2 and a 4 in series not sure what would happen ??
i would assume but dont know that the electronics will not allow it to work as you will have a big imbalance with 2 cells[parallel pair] looping through 1 cell on the small battery ?? it may off course work normally untill the 2ah drops out and carries on when the second 2amp replaces it

 

[^woody^]

Higher Ah batteries will always initially make the motor spin faster than lower capacity batteries, and then the motor will slow to equal the speed of a lower capacity battery as the current is drained

 

[ericmark]

Higher Ah batteries will always initially make the motor spin faster than lower capacity batteries

Will it? I assume with a brushless motor, DC is turned into AC, and it will be the frequency out of the inverter which will control motor speed. Voltage may have a bearing, and the larger the battery Ah wise the less volt drop, but the batteries in a strimmer last around 20 minutes, so 2 Ah = 4 amps for one hour, or 12 amps for 20 minutes, and rated to give 30 amps, so will not be a great volt drop.

This is the problem, you get no or little warning the battery is going to run out, going great one minute, depleted the next one.

 

[^woody^]

Yes. With every cordless tool, brushless and non-brushless, you can hear the motor spin faster with higher Ah batteries. Also, the additional power prevents tools like circular saws from binding. It's unrelated to the run time.

Whether this is specific to Li-ion and not the older NiCd or NiMh I don't know.

 

[Harry Bloomfield]

What happens if I put a 2 Ah and 4 Ah battery in the same garden tool?

If the electronics allowed it to happen, the 2Ah would become reverse charged, but I doubt it would allow it.

Can't believe that eBay price, think lot new was around £200, shows a single battery charger, what's the point in that?

Lidl sold single battery chargers, and chargers able to charge two at the same time.

 

[^woody^]

Lidl sold single battery chargers, and chargers able to charge two at the same time.

They are on offer from 15th Feb. £20 or £10 with a lidl card

 

[ericmark]

I already have the twin battery charger, it was the idea of having a unit which needs two batteries at a time, with a single battery charger, the twin one is fast, so with two sets of batteries, by the time second set are flat need to wait about 10 minutes for the first set to finish charging. After 40 minutes strimming a 10-minute break is welcome. (2 Ah batteries)