Sonic01
Member
- Joined
- Sep 19, 2017
- Messages
- 134
Hi Guys!
So, I've built myself a big mobile powerbank for camping with leftover cells from my powerwall project.
Now the problem i have is as follows, the input voltage range for my invert is 11v - 15v, but obv a Li-Ion will suppy 9v-12.6v so as soon as my battery is dropping to 11v, its cutting out.
Now my inverter has a max output of 300w and my BMS goes up to 30A, so the inverter should never be able to overload the BMS and the battery is capable of 30A as well so each component is capable of doing the 300w.
So I figured I just need to bump the voltage up to keep the inverter happy until I reach 9v, quick research shows "DC Boosters" do this however I can't find one with the spec I need, i.e. has to be able to take an input as low as 9v, yet also be able to take an input load of 30A.
The only models i see capable of 25A+ are only accepting 10v+ input, i can see some smaller ones will do 9v but the input is rated at 20A and the output at 12A:
https://www.aliexpress.com/item/327...chweb0_0,searchweb201602_2,searchweb201603_60
So I'm wondering if i can just run a few of these in parallel to be able to take the load? I've tried google around this and all the answers seem to be either "yes its fine" or "no, one will overload and burn out".
my understanding is that if one is slightly stronger then the other, it will just take slightly more load? though it was that simple?
Any advice would be greatly appreciated!
So, I've built myself a big mobile powerbank for camping with leftover cells from my powerwall project.
Now the problem i have is as follows, the input voltage range for my invert is 11v - 15v, but obv a Li-Ion will suppy 9v-12.6v so as soon as my battery is dropping to 11v, its cutting out.
Now my inverter has a max output of 300w and my BMS goes up to 30A, so the inverter should never be able to overload the BMS and the battery is capable of 30A as well so each component is capable of doing the 300w.
So I figured I just need to bump the voltage up to keep the inverter happy until I reach 9v, quick research shows "DC Boosters" do this however I can't find one with the spec I need, i.e. has to be able to take an input as low as 9v, yet also be able to take an input load of 30A.
The only models i see capable of 25A+ are only accepting 10v+ input, i can see some smaller ones will do 9v but the input is rated at 20A and the output at 12A:
https://www.aliexpress.com/item/327...chweb0_0,searchweb201602_2,searchweb201603_60
So I'm wondering if i can just run a few of these in parallel to be able to take the load? I've tried google around this and all the answers seem to be either "yes its fine" or "no, one will overload and burn out".
my understanding is that if one is slightly stronger then the other, it will just take slightly more load? though it was that simple?
Any advice would be greatly appreciated!