I thought about the wireless mower, pondering propelled petrol (ammo1.livejournal.com/1067246.html), I looked at the battery reading reviews about them, my readers.
And then this morning, the Internet has brought about a sale in which the rechargeable mower Makita DLM380Z sold for 3,990 rubles, which is twice lower than the usual price. So I bought this pig, it remains now to figure out how to make it work.
The letter indicates that the mower Z in the title are sold without battery, with the battery there must be installed two at a time. The same mower with two batteries 18V 4Ah and charger sold in Leroy for 18712 rubles.
Two original battery Makita 18V 4Ah and charger are 14559 rubles. Of course, I will not buy them.
I bought the mower for 4000 with the idea that it will be possible "prikolhozit" 40 cheap nizkotokovyh 18650 Battery 100 rubles apiece (On such Kreosan on elektrovelike in Crimea and Chernobyl ride dissected). These batteries can withstand currents up to 5A. If you connect them in the scheme 4p10s (ten in a row, four in parallel) will turn 36V 10.4Ah battery withstanding current up to 20A. At the same time the problem will be solved very long time working on the mower battery to which complain in a review.
The only question is how to connect them. Mower two slots under the two batteries. The right contact of the first battery is connected to the second left (zero resistance). Each battery there is a third contact.
Disassembled see what's inside. And inside the electronics box, filled with epoxy (white stripe on the left of the motor), and all the wires go there And two battery wires go there separately, even though they like as well as connected consistently.
direct drive - the knife sits directly on the motor shaft, which, to my surprise, turned out to be brushed.
I wanted to check the file for the mower 36 volts with three connected in series, the batteries of the UPS, but the fear - suddenly burn electronics. Perhaps the file a to start twice to 18 volts with two lab power supplies.
It is unclear what to do with the third wire, and whether it is connected to operate without the mower. In Chinese battery boards photographs for Makita between plus and third wire hanging something like a thermistor. By the way, that this fee for $ 3.81. If does not work, you can buy a pair of these cards and connect 20 batteries in each.
Another option - to buy in the same building for Ali Makita batteries and charging with fees and simply paste into your body 18650, but the problem is, that the housing designed for 15 cans (3p5s), and there is a danger that nizkotokovye batteries in such a configuration will sdyhat and high current double more expensive. You can, of course, buy ready-made and batteries for Makita Ali 2500 rubles apiece, that's only if the declared capacity 6Ah, judging by the reviews, there is less 3Ah.
Advise how best to do and what to do in any case impossible.
And yet, if you have a lithium battery Makita 18V and multimeter, please measure the resistance between the third terminal and a plus (it is next to it).
P.S. Regular price on this mower on Yandex. Store 9300 rubles, the minimum price (to the player) 6788 rubles.
A "220" sold it to me for 3990.
© 2019 Alex Nadozhin
The main theme of my blog - Equipment for human life. I write reviews, share experiences, talk about all sorts of interesting things. My second project - lamptest.ru. I test LED lamps and help figure out which ones are good and which are not.