Router Battery Backup

AfricanTech said:
Thanks, the person who asked me isn't going to want to spend more than 2.5k or so.
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I have this and it works well. Minor con is the normal charger takes 2 hours and this takes 3 so it's slightly slower

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AfricanTech said:
Won't you need an external charger for the spare though?
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You just use the laptop's existing power brick and internal charger, pop the battery out and swap.

If the battery is replaceable it's a bit of a no-brainer to buy one at least because they're < 50% the price of a universal charger and it may be all that's required.
 
AfricanTech said:
Any recommendations for something to extend the life of a Lenovo Laptop?
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This has a 19v output, do no know how long it will run a laptop before the laptop battery will take over.
 
Can someone explain to me. I see people using the 8800mah mini ups say that they run out before 4 hour loadshedding is finished. Is 8800mah not 8.8ah?
Why I ask. I have a normal 7.2AH lead acid gate motor battery on a cheap inverter running my router and ONT. Now this should not be as efficient than running dc to dc. But I run the router and ONT for 4 hour loadshedding session and it uses only about 3AH of the battery. This battery is almost 2 years old and have been used and charged mostly twice a day the last year or so.
So why does the 8800mah devices not last, as they can surely go to lower % as they are Lithium?
 
Jean Claude Vaaldamme said:
Can someone explain to me. I see people using the 8800mah mini ups say that they run out before 4 hour loadshedding is finished. Is 8800mah not 8.8ah?
Why I ask. I have a normal 7.2AH lead acid gate motor battery on a cheap inverter running my router and ONT. Now this should not be as efficient than running dc to dc. But I run the router and ONT for 4 hour loadshedding session and it uses only about 3AH of the battery. This battery is almost 2 years old and have been used and charged mostly twice a day the last year or so.
So why does the 8800mah devices not last, as they can surely go to lower % as they are Lithium?
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The 8.8Ah is at 3.7V and your 7.2Ah is at 12.8V, so P=V*I and yours has more than twice the Wh
 
Bundu said:
The 8.8Ah is at 3.7V and your 7.2Ah is at 12.8V, so P=V*I and yours has more than twice the Wh
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Thanks. And if I may highjack this thread with another question
Can one put one of these 7.2AH LIPo batteries into a gate motor? Are the gate motor chargers fine for LIPO?
 
Jean Claude Vaaldamme said:
Thanks. And if I may highjack this thread with another question
Can one put one of these 7.2AH LIPo batteries into a gate motor? Are the gate motor chargers fine for LIPO?
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I got the SecuriProd one and put it in an ET 500 motor. It works well. The motor tries to float it at 13.5 V which is fine.

I say "tries" because it's TBD whether the gate motor charger is fast enough. From what I can see over the past few days the SoC has gradually dropped. I suspect after a few weeks of continuous stage 5+ I may have to recharge the battery externally.

But at least these LiFePO4s won't be destroyed by being gradually drained the way the LAs are.
 
Xiphan said:
I actually like this idea as it would be a lot cheaper than replacing the entire UPS with a new one. I just need to open up my UPS and see how the batteries are installed. Are higher capacity batteries generally drop in replacements? Would the existing BMS be able to handle them?
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If they are 18650 batteries, it should be easy. The charging should be fine.
Post a pic when opened.
 
I have a Ratel 860p and sometimes after a 4 hour loadshedding it seems to have switched itself off and I have to manually press the green button to get it to switch on again.

Number 1 concern is that the 4 hour loadshedding is completely draining the battery. I only have the ONT and router plugged in. Surely I should be getting more time than 4 hours?

Number 2 concern is that I read that even if it runs out it is supposed to switch itself back on when the power is restored.

Any ideas as to what's going on here?
 
derp90 said:
Number 1 concern is that the 4 hour loadshedding is completely draining the battery. I only have the ONT and router plugged in. Surely I should be getting more time than 4 hours?

Number 2 concern is that I read that even if it runs out it is supposed to switch itself back on when the power is restored.

Any ideas as to what's going on here?
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How old is the unit? The unit has a finite amount of capacity and the older/more cycles it had to endure, the less capacity is has. Your ONT is normally not an issue, but it would be best that you turn off any features on the router that you dont use. Every watt helps. What router do you have though? That is the culprit here, load wise

Incidentally I have a similar setup, capacity wize, but split my ONT and router with each having their own 8800mah Gizzu almost 3 years ago. Lasts 4+ hours without an issue.
 
ld13 said:
How old is the unit? The unit has a finite amount of capacity and the older/more cycles it had to endure, the less capacity is has. Your ONT is normally not an issue, but it would be best that you turn off any features on the router that you dont use. Every watt helps. What router do you have though? That is the culprit here, load wise

Incidentally I have a similar setup, capacity wize, but split my ONT and router with each having their own 8800mah Gizzu almost 3 years ago. Lasts 4+ hours without an issue.
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It's 2 years old. I checked the amp ratings of the router and ONT. Router says 3.3 and ONT says 0.25. So the Ratel being 17600mAh should definitely give me 4 hours, but I guess if they're slow to turn on the power or the battery capacity has diminished, then it could be an issue.

I did read that it's supposed to just switch on again though.
 
derp90 said:
I have a Ratel 860p and sometimes after a 4 hour loadshedding it seems to have switched itself off and I have to manually press the green button to get it to switch on again.

Number 1 concern is that the 4 hour loadshedding is completely draining the battery. I only have the ONT and router plugged in. Surely I should be getting more time than 4 hours?

Number 2 concern is that I read that even if it runs out it is supposed to switch itself back on when the power is restored.

Any ideas as to what's going on here?
Click to expand...
I get more than 6 hours (down to 25% at that point), with a TP-link C64 and TP-Link Deco S4 on my 4 year old Ratel 860P.

On the other side I have Mikrotik Router, security camera, ONT and another Deco S4 on a similarly aged 860P, lasting about 4 hours before switching off (does come on by itself though when power comes back I think)
 
LandyMan said:
I get more than 6 hours (down to 25% at that point), with a TP-link C64 and TP-Link Deco S4 on my 4 year old Ratel 860P.

On the other side I have Mikrotik Router, security camera, ONT and another Deco S4 on a similarly aged 860P, lasting about 4 hours before switching off (does come on by itself though when power comes back I think)
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There are two possibilities as I see it:

1. It isn't running out of power, and some bug or something is causing it to just switch off
2. It is running out of power, and some bug or something is causing it not to switch on again

,:/
 
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