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forum threadSkillful_Pickle | Staff posted Jul 16, 2025 05:21 PM
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forum threadSkillful_Pickle | Staff posted Jul 16, 2025 05:21 PM

ECO-WORTHY Battery Monitoring+ Secondary Lithium Battery Protection Module $60 + Free Shipping

$60

$100

40% off
eBay
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eco-worthy-us via eBay [ebay.com] has ECO-WORTHY Battery Monitoring+ Secondary Lithium Battery Protection Module on sale for $99.99 - $40 off w/ coupon code ECOJULY40 at checkout = $59.99. Shipping is free.

Includes:
  • 1x Secondary lithium battery protection module
  • 1x Battery monitoring module
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About the Poster
eco-worthy-us via eBay [ebay.com] has ECO-WORTHY Battery Monitoring+ Secondary Lithium Battery Protection Module on sale for $99.99 - $40 off w/ coupon code ECOJULY40 at checkout = $59.99. Shipping is free.

Includes:
  • 1x Secondary lithium battery protection module
  • 1x Battery monitoring module

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Jul 17, 2025 02:17 AM
252 Posts
Joined Aug 2021
Stephen77Jul 17, 2025 02:17 AM
252 Posts
What does this product do?
1
1
Jul 17, 2025 03:54 AM
62 Posts
Joined Dec 2015
m8r-bm63kiJul 17, 2025 03:54 AM
62 Posts
Quote from Stephen77 :
What does this product do?
Never heard of this before but just took a Quick Look. Apparently the monitor is doing charge/discharge current measurements with a Hall effect inductive monitor. The overvoltage "protection" will sound an alarm; I don't know if it also tries to clamp the voltage or not.

This is aimed at off-grid solar installations but can probably be used elsewhere.
1
Pro
Jul 20, 2025 02:05 PM
872 Posts
Joined Jul 2019
WoodSlayR
Pro
Jul 20, 2025 02:05 PM
872 Posts
Quote from m8r-bm63ki :
Never heard of this before but just took a Quick Look. Apparently the monitor is doing charge/discharge current measurements with a Hall effect inductive monitor. The overvoltage "protection" will sound an alarm; I don't know if it also tries to clamp the voltage or not.

This is aimed at off-grid solar installations but can probably be used elsewhere.
What does clamping the voltage mean?
Jul 20, 2025 10:25 PM
860 Posts
Joined Dec 2004
GrumpierOldManJul 20, 2025 10:25 PM
860 Posts
Quote from WoodSlayR :
What does clamping the voltage mean?
Clamping means it cuts off the excessive voltage.
Other options would be: do nothing, and allow potential damage. Or act as a breaker, and just kill the circuit outright. Clamping is the nice, gentler, usually preferred option.
Pro
Jul 20, 2025 11:15 PM
872 Posts
Joined Jul 2019
WoodSlayR
Pro
Jul 20, 2025 11:15 PM
872 Posts
Quote from m8r-bm63ki :
Never heard of this before but just took a Quick Look. Apparently the monitor is doing charge/discharge current measurements with a Hall effect inductive monitor. The overvoltage "protection" will sound an alarm; I don't know if it also tries to clamp the voltage or not.

This is aimed at off-grid solar installations but can probably be used elsewhere.
1 problem with a hall monitor is they can only measure current in one direction. You'd need two of them to measure discharge and charge current. A single inline shunt can measure current in both directions, even at the same time, and is inexpensive and easy not much harder to install. You can find them regularly for 20 bucks. They are also more accurate than a hall monitor.
Last edited by WoodSlayR July 20, 2025 at 05:34 PM.
1
Aug 06, 2025 03:11 AM
15,336 Posts
Joined Aug 2006
Tourist1292Aug 06, 2025 03:11 AM
15,336 Posts
Price went further down to $48.xx after coupon. I ordered one set. The overvoltage protector is basically an alarm and would cut off the charging in 0.1s when it sensed the overvoltage. Originally I just want the bluetooth battery monitor (which is also on sale at $24.xx after coupon) but decided to get the bundle set instead.

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