If this is for a 9V pump, why does it say 12V on the battery pack itself (imprinted in the plastic)? (It even shows the same on the Medela site.)
1131086
Didn't realize it says 12v until I looked to answer your question. Works great with my 9v instyle pump. Love it!!
1131087
They are using 12v of batteries to gain longer runtimes. Inside the pack is a regulator that drops the final voltage to 9v
1131088
I am not sure why it says that, I didn't even notice it till I looked to answer your question. I know when I purchased it said for use with 9v pumps. Mine says the same but it works perfectly withy 9v instyle pump. No issues at all. I absolutely love it and the freedom it gives me to pump anywhere!
1131089
Works perfectly with my 9v instyle pump. No issues at all. Not sure why it says that but it does not seem to matter
1131090
have you measured the output voltage with a voltmeter? I have the 9v pump, and the 9v AC wall pack I measured outputs 12v (actually closer to 13vdc). If you actually try to run the pump on 9v it doesn't work as well. I am not sure what the acceptable voltage ranges are but you can run the pump safely on 12v. I actually have a power bank with 12v output that it runs for days on (http://smile.amazon.com/gp/product/B00VF6B8X6 its expensive, but you can get similar units on sale for pretty cheap and its a lot smaller and more useful than this silly pack).
1131091
I really wish someone would have done the math on this already. The pack holds 8 batteries. If you use alkaline batteries, which are 1.5v each, you get 8x1.5=12 volts. If you use nimh rechargeable batteries, which are 1.2v, you get 8x1.2=9.6v.The reason it shows 12v is because 8 normal AA batteries will yield 12v. The pumps can handle 12v just fine. We personally use rechargeables- we bought 16 rechargeable eneloops and just swap them every 3 days or so (my wife pumps exclusively). We found that we can stretch it to four days but beyond that the pump will start to die.
1468498
not really sure,i use mine to charge 12 volt battery to pump water from rainbarrel system,works good!
1435397
I'm sorry, but I don't remember. I think it was the AA batteries as I do not remember having to buy a 9v. I gave as a gift.
529656
Hi msed, that motor should work just fine, the voltage in a 12 volt system varies, so if the motor voltage is rated a little higher it is better. During the charging of a battery the voltage is always higher than the nominal battery voltage of 12 volts by approximently 1.5 .
1207047
Hi,We are the manufacturer of this item. Since your pump is 9VDC, not 12VDC, please buy this item: B008Z76L2Q. Search with this number. You will find 9VDC adapter for your pump.thanksNenesupply Customer Service
1163534
I was pretty sure it took a 9v, I just opened mine to confirm. 9 volt. Take care...
1805771
I did the same thing. Charged the battery reading 13v but the pump has a red light and then a green light but it never goes on. I thought this pump would work great but it has given me a lot of problems.
147145
both, but keep in mind that the default battery charges from 12v and some new laptops ( vaio for example) have 10,5 volts and an adapter is needed. I owned many backpacks and it's one of the best ones i've ever had :-)
34044
checked with a battery website, it may be that 10.8v is the normal sustained voltage. The 12v may be for high torque situations where the tool draws more voltage for a short duration. The battery I have is rated 10.8v/12v peak.
1845076
I don't know but I charge a battery that pumps 400 gal of fuel a day with a 12 volt 30 amp pump
1832392
The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix I've found for that is to glue it in place with super glue or model glue. The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix... » Read More The voltage and current rating look right (9volts at 200milliamps), but O can't tell you if the polarity of the plug is correct for that device. There should be a little symbol near the socket that looks like a dot with a semicircle surrounding it and with a "+" connected to the dot in the middle (center positive). If that matches, then you're golden. If not, then you need to keep looking. Please note, the part of this adapter with the two spade-pins that plugs into the wall socket can separate from the body of the adapter and is notorious for breaking away from it. The only fix I've found for that is to glue it in place with super glue or model glue. « Show Less
1120928
No where! The battery compartment of the unit is made for four AA cells only. Four AA cells connected in series, will give 1.5x4=6 Volts. Perhaps there is error in the sticker on the back side of ths gadget where it is written that the DC outlet should be connected to 200 mA 9 V (core negative) DC supply!! I have owned this dictionary for last 12 years and have gifted to many children and had not noticed this error. Thanks for pointing it out. BTW most of the DC supplies are core positive unlike the recommendation here, so if at all you wish to use a DC supply please buy the original unit manufactured / recommended by Language Master only to safeguard your dictionary. No where! The battery compartment of the unit is made for four AA cells only. Four AA cells connected in series, will give 1.5x4=6 Volts. Perhaps there is error in the sticker on the back side of ths gadget where it is written that the DC outlet should be connected to 200 mA 9 V (core negative) DC supply!! I have owned this dictionary for last 12 years and have gifted to many children and had not noticed this error. Thanks for pointing it out. BTW most of the DC supplies are core positive unlike the recommendation here, so if at all you wish to use a DC supply please buy the... » Read More No where! The battery compartment of the unit is made for four AA cells only. Four AA cells connected in series, will give 1.5x4=6 Volts. Perhaps there is error in the sticker on the back side of ths gadget where it is written that the DC outlet should be connected to 200 mA 9 V (core negative) DC supply!! I have owned this dictionary for last 12 years and have gifted to many children and had not noticed this error. Thanks for pointing it out. BTW most of the DC supplies are core positive unlike the recommendation here, so if at all you wish to use a DC supply please buy the original unit manufactured / recommended by Language Master only to safeguard your dictionary. « Show Less
731127
I have this pump. Per the user manual you need to purchase the 9V medela car adapter. The 12V is only for pumps purchased earlier than 2008.
284144
Absolutely, and vice versa. They are the same LiION batteries, I have both and do this all the time and have done so for a long time. Changing it from 10.8 to 12V was marketing speak, one is the open circuit voltage and one is the under load voltage.
1613028
I have two six volt batteries in a series configuration(12volt system) So I assume your batteries are like mine and supporting a standard 12v application. This product works great for me. I recommend the extra long cable accessory.
1942382
It is a small battery, neither AA or AAA. It is marked "KEDSUM 23A 12V replaces MN21/MS21/V23GA/L1028." I think this battery is commonly used in car opener toggles, and this makes sense as it appears this switch uses similar technology. At least in my case, a battery was included in the package.
1368813
Can't find that information, BUT can tell you that I'd NEVER buy these batteries again. Have never had a 9V with such a short life. Duracell Procell should be called Druacell Complete-novice oh well . . . live and learn.