Battery help

[Mitz]

Little on the low side.

No it's not. It's a single 18650 mod and my figures are based on my own user experience with these cells and are intended to give sensible battery life. It's not all about the maximum power a battery can supply.

 

[Richard Winter]

No its not. Its a single 18650 mod and my figures are intended to give sensible battery life. It's not all about the maximum power a battery can supply.

The figures I quoted in my previous posts in this thread ARE for a single 18650 battery mod and are well within safe operating wattage usage against CDR values.
There are two issues here, safe operating within the limits of a battery which i specified and battery life from charge to discharge specified in mAh.

 

[Mitz]

The figures I quoted in my previous posts in this thread ARE for a single 18650 battery mod and are well within safe operating wattage usage against CDR values.
There are two issues here, safe operating within the limits of a battery which i specified and battery life from charge to discharge specified in mAh.

I never said they were not safe to use at higher power. I gave my opinion on what cell is best for a given power setting in a single 18650 mod to give the best value for money and best useable cell life based on my own personal real world experience with those cells. You are free to disagree. I stand by my recommendation 100%

 

[Richard Winter]

I never said they were not safe to use at higher power. I gave my opinion on what cell is best for a given power setting in a single 18650 mod to give the best value for money and best useable cell life based on my own personal real world experience with those cells. You are free to disagree. I stand by my recommendation 100% View attachment 213368

Not quite sure what your trying to get at here @Mitz and why, as I simply said i thought your figures were a little on the low side.
I was not doubting your input. I was clearly pointing out what batteries and their ratings are against safe operating conditions.
I did not understand your recommendations in your first post and why and not been helped by editing the posts.
As I said earlier, I didnt say anything other than I thought your limits were a little low. I didnt mean anything nasty by it at all and apologise if it came across that way.
The Molicel P26A is 25A @ 2600mA costing £5.99
The Samsung 30Q is 20A @ 3000mA costing £2.30
Based on these figures the Samsung 30Q will last longer and is cheaper to buy and is good to use upto 60W in a single 18650 battery mod.

 

[Mitz]

Not quite sure what your trying to get at here @Mitz and why, as I simply said i thought your figures were a little on the low side.
I was not doubting your input. I was clearly pointing out what batteries and their ratings are against safe operating conditions.
I did not understand your recommendations in your first post and why and not been helped by editing the posts.
As I said earlier, I didnt say anything other than I thought your limits were a little low. I didnt mean anything nasty by it at all and apologise if it came across that way.
The Molicel P26A is 25A @ 2600mA costing £5.99
The Samsung 30Q is 20A @ 3000mA costing £2.30
Based on these figures the Samsung 30Q will last longer and is cheaper to buy and is good to use upto 60W in a single 18650 battery mod.

I'm not trying to "get at" anything at all bud. I posted my recommendation based on my own experience that 30Qs are good cells to use in a single battery mod up to around the 40w mark. They're cheap and cheerful but in my own experience they don't cope as well as some other more expensive brands at higher wattage. I never said they couldn't or were not perfectly safe to use at higher power levels. Personally, I don't like having to constantly carry spare cells or having to constantly charge them. So I find at around 40w or less they give the best value for money and best cell life. Anything above 40w and I would go for something else and that something else would currently be the Molicells becuase they cope better at wattages above 40w without draining the cell as fast. I could have expanded on that in my original post but I decided to keep it short and sweet.

You decided that what I said wasn't in line with your own opinion and the cells were capable of more and started quoting CDR numbers which have absolutely no bearing whatsoever on anything that I said. So I replied that what I said was not on the low side. It may be on the low side of the cells CDR but you're the one talking about the cells CDR, not me. We are simply talking about different things mate. Tis all and nothing more.

Nothing for you to apologise for mate. My apologies if I'm sounding overly grumpy today. It's not intentional if I am. I am tired tho so I may well be, unintentionally.

No offence taken or intended. C'mon, let's have a hug...

 

[Deleted member 54254]

Coil resistance also has a bearing on battery longevity. I find when I use TC with a nice 6 wrap NiFe30, it slaughters a 30Q, whereas a VTC5D goes noticeably longer. Not giving a shit about the numbers so please don't bother, just my experience.

 

[speedfreek67]

30Q's are definitely going to struggle above 40 watts or so, seeing as their CDR is only really 15 amps. At 20 amps, performance is temperature limited. At higher wattage they will sag more than the Molicels would at the same wattage

You'll get more watt hours out of the Molicels at above 10 amps or so, too, so the extra mAh in the 30Q becomes redundant.

 

[Deleted member 58360]

Coil resistance also has a bearing on battery longevity. I find when I use TC with a nice 6 wrap NiFe30, it slaughters a 30Q, whereas a VTC5D goes noticeably longer. Not giving a shit about the numbers so please don't bother, just my experience.

A cell with a higher number capacity can exhibit a lower capacity when pushed close to the edge, where a lower capacity cell used at the same rate (but further from it's limit) can last longer.

The numbers are only any use within the bounds of intended measurement...

 

[Richard Winter]

I'm not trying to "get at" anything at all bud. I posted my recommendation based on my own experience that 30Qs are good cells to use in a single battery mod up to around the 40w mark. They're cheap and cheerful but in my own experience they don't cope as well as some other more expensive brands at higher wattage. I never said they couldn't or were not perfectly safe to use at higher power levels. Personally, I don't like having to constantly carry spare cells or having to constantly charge them. So I find at around 40w or less they give the best value for money and best cell life. Anything above 40w and I would go for something else and that something else would currently be the Molicells becuase they cope better at wattages above 40w without draining the cell as fast. I could have expanded on that in my original post but I decided to keep it short and sweet.

You decided that what I said wasn't in line with your own opinion and the cells were capable of more and started quoting CDR numbers which have absolutely no bearing whatsoever on anything that I said. So I replied that what I said was not on the low side. It may be on the low side of the cells CDR but you're the one talking about the cells CDR, not me. We are simply talking about different things mate. Tis all and nothing more.

Nothing for you to apologise for mate. My apologies if I'm sounding overly grumpy today. It's not intentional if I am. I am tired tho so I may well be, unintentionally.

No offence taken or intended. C'mon, let's have a hug...

Ok @Mitz, no problem at all mate. Big hug coming your way.

 

[Ruby]

Superb thanks to everyone for the replys great help. Xx