12V 10000Ah Lithium Battery in DIY Astronomer Posted February 22, 2017 On 10/09/2016 at 17:55, trogre said: Hi All. Just looking for advice on a 12v 10000Ah lithium battery for sale on ebay uk. I did notice that on ebay.com (USA) they have the same battery for sale. The one I am looking at is available in the UK but the rest come from either China, Hong Kong or Guernsey. I have no experience in lithium batteries and to me it does seem cheap @ £20.78 inc p.p, Ebay UK No 152224745914 The same batteries (and photos) on sale on ebay.com are between $22-25 inc p.p, Ebay.com No 182063039389 . It could well be that 12v lithium batteries are coming down in price anyway. The things that puts me off is the description on the ebay seller has the charger included but seller then states the charger is not included which means another £10 on top of that price. Another thing is the seller has 209 negative feedbacks for one month!! Not good!! The specs if you do not have a look are:- DC 12V 10000mAh Rechargeable Protable Li-ion Battery Lithium-ion+UK Plug Charger Specifications:input voltage: 12.6 VCDoutput voltage:12.6-10.8 VCD 10000mAhCapacity: 10000mAhCharger Adapter：UKPackage Included:1 X Lithium-ion battery1x Charger Adapter !!!!!!!!!!!???????? I will hoping if this is ok to power a dew heater strap & controller for a 8” sct for about 2 hours. If power is not enough and the item seems too cheap for what it is I will give it a miss. Thanks for any input. P.S No idea why some type is highlighted in a white box,sorry Avoid this battery. It will not be 10000mah. A good lipo of that size will cost you well in the region of £100-£150. General rule of thumb is expect to pay £10 for every Amp with these batteries. They are a lot cheaper than they were 5 years ago, as demand has increased as the model flying market had a big boom (no pun ntended). The charger will not be any good either, unless it is a balance charger in order to get the 3 cells perfectly balanced at around 4.2v per cell, otherwise a cell will blow and you cannot stop it. I use Lipo's for my large RC planes, and the chargers are expensive for a good safe brand. Stick with a deep cycle SLA battery like used in mobility scooters and kiddie carts. You can get a 10 amp off ebay for around £25 delivered. They are designed for long slow current draw, unlike a car battery. Do not go for the alarm or PSU style back-up batteries as they will not tolerate constant repeated slow draw. I use a 9 amp one for long fishing sessions to power an LED strip light, and charge my tablet and phone. After 48 hrs usage it has gone down by around 1 - 1.5v from 13v. Been using mine for around 3 years now.