Celestron 18774-Cgl Powertank 7, 12V -7Ah, Black

Es ist ein toller Akku von Celestron. Ich habe ihn jetzt schon mehrere Nächte in Folge genutzt um mein Teleskop mit Strom zu versorgen sowie div. Anbauteile wie mein WLAN Adapter und das StarSense.Die erste Ladezeit war heftig mit. 16Std aber dann die nächste waren nur 10Std.Der Akku hält 2 Nächte auch bei hohen Minustemperaturen.Preisleistung ist mehr als gut.

Purchased to power a Nexstar 8 SE, this item is highly versatile. Not only does it power the telescope, it also offers a variety of other uses. As advertised, it has two flashlights. One big LED spotlight and a smaller light with a red cap aimed at preserving night vision. There are 2 twelve volt cigarette lighter receptacles and two 5v USB ports to recharge smart phones. Be advised however that there are no 3, 6 and 9 volt receptacles. These have been replaced by the USB ports. The tank can also be used to boost a weak car battery, a definite plus if the need arises.All in all, a very useful item for astronomy and a wide range of other uses. Highly recommanded

I buy it to use it with my telescope setup and it just consumed all the power in less than 1 hour at full chargeReally useless and not worth it

se c'e scritto celestron o altra marca sono tutti uguali cambia il prezzo ! io hoo il 17 ah da molti mesi marca sconosciuta , e ultimamente ho preso questo, deve arrivare ,come riserva perche' sono rimasto a secco per non aver ricaricato il mio per 2 mesi il power tank , come ho scritto di risposta a un acquirente il power va sempre ricaricato ad ogni uso , ci ho rimesso 45 euro piu ho dovuto smontare tutto , rimontare non e' facile e non tornena piu' come prima , come strumento e' buono e costa uguale al power fai da te , carina la torcia a luce rossa che si toglie e ha un cavo anche buono in lunghezza , basta girala e estrarla , comode le uscite da 5 V , ultimamente sono rimasto senza carica al cellulare e sono servite ! credo che questo 7ah sia anche meno pesante del 17 ah , la durata del mio power tank 17ah acceso a casa e' stata di tre giorni ! con la luce grande accesa e qualche volta anche la radio , questo che non mi piace di questo power , che ci fai con la radio e la sirena , fa tutto l'apparato meno serio , anche i poli per caricare la batteria della macchina , sul mio c'e' scritto che , non essendo un strarter , devi aspettare 20 minuti ! MA!!!, comunque e' consigliato per non fare casini con la corrente ,una montaura seria costa ...allora , e' arrivar con molto anticipo e ho notato che il contenitore e' molto piccolo , una volta aperto il cavo per il collegamento al telescopio non entra più , anzi consiglio di non metterlo dentro perché si perde , lo sportello chiude male e non c'entra neanche il caricatore , avrei voglia di togliere una stella ! Confronto al 17ah è moltoPiù piccolo e leggero . Peccato che ad oggi è aumentato circa il doppio !!! Ne avrei preso un altro .

Well, it looks like a tank anyway.I camp out a lot. As such I've grown to appreciate having a power box available for the times I'm plop-camping (or "glamping"). I used to take a jump box with me, but I always felt a little funny (and inefficient) about something with attached jumper cables.Enter the Celestron Power Tank. Yes, it's intended to support the use of a telescope. But it can do oh so much more.For instance, there are two cigarette lighter plugs (I'm old enough where I can call them that). Plug in a suitable power inverter and you have a power outlet you can use to, say, inflate an air mattress. Two USB ports lets you charge your stuff. And there is a mack daddy spotlight on it.So it works. And as there are a two terminals on the back, with jumper cables I could theoretically use jumper cables with this. I also appreciate the off/on/charge switch...it makes it very clear what I'm doing, and it enables me to keep the unit plugged in without charging it. This is important as the instructions tell you to charge it regularly when in storage. Much easier to flip a switch while it's already plugged in, instead of unraveling a charging cable (after you spend twenty minutes looking for it) and plugging it in.The light is quite bright and can angle down. I really kind of wish it angled in all directions though, as I was using this as a tent light (and thus pointed straight up) but it kept tipping.Charging this at first use is unclear - on one hand (the printed directions) you're told to charge it for 14-16 hours out of the box, but on the unit itself you're told to charge it for 24 hours. You are then cautioned against overcharging it lest explosive gasses are generated and it explodes or something.Your takeaway - this is a easy to use and solid performer for times when you need a versatile power box. It's not overly heavy as jump boxes tend to be, it has a clever on/off/charge switch, and the light is plenty powerful for normal use. This is a winner.