WTS Echo 1 mp5 pdw with upgrades and other guns - Page 2

Date: Tuesday, 2011-03-29, 9:14 PM | Message # 16

Group: Junior Operator

Messages: 50

Status: Offline

if you want, whenever i get to a war i can take it out for you.

otherwise, the whole lipodanger thing is abit overdone to me... theyre just like normal batteries exept abit more sensitive. as long as the voltage doesnt drop too low, your ok. so basically if you put it on the charger when your done theres no way it can break. also like any other battery, keep it away from extreme heat.

other than that i would actually say lipos are more safe than other batteries, because the balance chargers have a bunch of safety features built in incase there was an error. the nimh chargers are prone to just forcing out the current regardless of the battery (for the most part).

also lipos are used in everyday stuff, like cell phones and computers so its not like theyre new untested technology or anything lol.

also u can probly find vids on youtube of people taking apart mp5s

also if you already have a nimh smart charger, you can probably sell it and use the money to get a good lipo charger. i bought mine of hobbypartz for 32$ shipped, and its really high tech and charges lipo, lifepo, nimh, nicd, and lead acid.

laser

Date: Tuesday, 2011-03-29, 10:59 PM | Message # 17

Group: Senior Operator

Messages: 112

Status: Offline

i may just do that, but id still like to watch someone take apart the gun so ik how so i can get the battery in and out incase i get a second battery someday

if at first your bbs don't hit them, its time to go full auto

fuzzywuzzy

Date: Wednesday, 2011-03-30, 0:11 AM | Message # 18

Group: Senior Operator

Messages: 116

Status: Offline

Quote (dman58)

otherwise, the whole lipodanger thing is abit overdone to me... theyre just like normal batteries exept abit more sensitive. as long as the voltage doesnt drop too low, your ok. so basically if you put it on the charger when your done theres no way it can break. also like any other battery, keep it away from extreme heat.

Sorry but that's a load of crap. They are not at all like normal batteries, in composition, output and other factors. There are many ways it can break, inflate and erupt. Not only can the voltage drop too low, it can go too high. Many times the reason lipos catch on fire is because of faulty chargers. It only takes one time for your charger to make a mistake. Overtime after cramming it into hard compartments or even just handling it, the soft casting will wear out, a singly tiny hole in a lipo will break the airtight seal and cause it to puff increasing the danger of fire. Ignorance is no excuse, you should never caution new users against lipo safety regardless of your personal beliefs. The last thing anyone needs is to have their house burn down or to have lithium burning all over someones skin because 'lipos are supposed to be so safe.' Can lipos be safe? yes. Do accidents happen? yes. What can you do about it? Don't dismiss lipo safety as a matter of insignificance

Quote (dman58)

other than that i would actually say lipos are more safe than other batteries, because the balance chargers have a bunch of safety features built in incase there was an error. the nimh chargers are prone to just forcing out the current regardless of the battery (for the most part).

No they are not. When a nicd or nimh battery is overcharged it gets a bit hot and the hard casing on a cell may begin to leak somewhere but it has almost no potential to start fires. In order for a 'smart' charger to correctly peak the voltage it has to guess when to stop charging. There is no set voltage for each brand of cells. However a typical defective charger just continues to charge regardless of the voltage. Basically a defective lipo charger would do the exact same thing as a defective nimh charger... overcharge it.

Quote (dman58)

also lipos are used in everyday stuff, like cell phones and computers so its not like theyre new untested technology or anything lol.

Lithium Ion batteries are used in every day 'stuff,' not Lithium Polymer. There is a distinct difference. Lipos are specifically designed for hobby applications, light weight extremely high discharge which results in a relatively fragile, volatile battery. Lithium ion batteries have a rugged hard case and and provide for lower current applications. Technology is never perfect. Sacrifices have to be made in order to achieve a performance. In this case safety was limited in order to get that lightweight high discharge battery. Obviously lipos are not new, they've been around quite a long time. It should be common sense by now to take safety precautions where they are due.

For the rest of the crew, I'm not trying to discourage the use of lipos, they are a great tool to use in airsoft. However a blatant disregard for safety of a potentially dangerous battery is not the way to approach it.

Eli

Date: Wednesday, 2011-03-30, 6:45 PM | Message # 19

Group: Junior Operator

Messages: 65

Status: Offline

^ouch mike knows his stuff

dman58

Date: Wednesday, 2011-03-30, 7:12 PM | Message # 20

Group: Junior Operator

Messages: 50

Status: Offline

jeez... sorry man. btw i was not disregarding safety, i always try to be safe when using lipos. but wtv, if you want a nimh go ahead, but when i first got that gun i used a nimh stick and it did not last long at all... and what i meant by the charger safety thing is that my smart charger for lipos/others has a load more circuits in it and microcontroller, so if there is an error, it will stop charging and tell you what it is.. it also has a port on the side for a thermometer so it will shut off if the battery gets hot.. sorry for the "load of crap", i dont study batterys, i was just saying what ppl have told me.

Eli

Date: Wednesday, 2011-03-30, 11:13 PM | Message # 21

Group: Junior Operator

Messages: 65

Status: Offline

mikes just a smart guy he doesn't "study" batteries either but he knows more about lipos than probably anyone else on this here forum.

fuzzywuzzy

Date: Thursday, 2011-03-31, 3:20 AM | Message # 22

Group: Senior Operator

Messages: 116

Status: Offline

Quote (dman58)

if you want a nimh go ahead, but when i first got that gun i used a nimh stick and it did not last long at all... and what i meant by the charger safety thing is that my smart charger for lipos/others has a load more circuits in it and microcontroller, so if there is an error, it will stop charging and tell you what it is.. it also has a port on the side for a thermometer so it will shut off if the battery gets hot.

If a lipo heats up enough to make the charger shut off, the battery is probably ruined or will permanently lose a lot of it's charge. Lipos should rarely even get warm.
All of my aegs and aeps run on lipos. I never said nimh was better, it is simply more safe. Most nimh batteries are crap and have low discharge rates or just burn out early. The one that comes with the mp5k isn't so great but the motor is absolute garbage so it takes a better battery to get it to pull the spring for more than a few hundred cycles. The only reliably good nimh cells are Elite. Intellects have a good discharge rate but they have a pretty high premature burn out rate. Anyhow it is most important to not overlook safety when introducing new players to lipo batteries.

dman58

Date: Thursday, 2011-03-31, 10:47 PM | Message # 23

Group: Junior Operator

Messages: 50

Status: Offline

yeah, i agree, the sensor's main purpose would be to prevent fires, not save the battery. . some nimh's are good, but large. for example a tenergy battery i have that is 8.4v 4200mah... this battery in my m16 has been performing very strong and can pull it over at decent speeds (m130 w/ a high torque standard ratio gears at 19rps), just about any nimh 2000mah or under has trouble pulling it over. it has never run out during a game, and it just seems really durable and powerful :)

as for lipo safety, i completely agree that its important to all users, for my lipos i only charge them with the balance function. I check them once in awhile with a low voltage indicator on the field and use a lipo-safe charging bag that is fire resistant for charging and storing. i would highly recommend this to new users, they are only $5 from hobbypartz

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