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 These have been replaced by the USB ports.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 charge Really 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 molto Più piccolo e leggero . Peccato che ad oggi è aumentato circa il doppio !!! Ne avrei preso un altro .

I have bought both the Power Tank 17 , and it's little brother (though this may be harder to find). Before my review points, please remember to charge the Power Tank after use. Don't let it get go flat, after multiple uses. It may have many Watts of power left, after each use but is a sealed Lead/Acid battery at its core. This needs a little care and time to charge after each use to keep it in prime condition. Even a top-up charge of a few hours, is recommended if not used for a few months. Note that there is a "back door" flap containing the "Cigarette lighter" cable. This is not always well mentioned. Don't go out and buy that. Unless you need another 12V outlet. It is great that there are 2 "Cigarette Lighter" sockets, but it is important to know that they are Not The Same. One is centre Negative (-ve), the other is centre Positive (+ve). For my Celestron C8, it is the right-hand; centre Positive. So if you think the Power Tank isn't working, for your appliance, try the other one ! Plus the great fuse protection provided, may need a quick check. If you are using this Power Tank for astronomy, the red light gives you the "night sight adaption", protection. You can change eyepieces and see what you are doing without any white light "dazzle". Excellent. The main beam is on a ratchet, so you can point it downwards, while walking around in the dark, great to avoid dips in the ground, tree roots etc, if out in the countryside. Which brings me to another point, that the Power Tank can be a great aid if camping/caravaning etc. I wouldn't get it wet, but when away from any mains supply, there are 2 x USB 1.5 Amp (5V) charging ports. Very usefull, for charging phones/tablets etc. I have even found the Power Tank a blessing in a power cut. Keeps a light on and phones etc running. There is the added joy of a radio on the Power Tank 17..... AM & FM ! Surprised by the tonal quality on both bands. Obviously keep volume appropriate to where you are. And then... The Siren Setting ! Who thought of that ? Initially surprised by this lovely fun function, but could be Really handy if someone is lost or needs to get attention when out camping, in a dark observing site etc. I think that the price, is fair, for such well thought-out and good capacity device. You get what you pay for. I recommend it for astronomers, with portable motorised telescopes as myself, and to all others with a need for portable power. Nice One Celestron !