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Ships from
RMH RV Parts & Acc. (Edwards RV Parts & Acc.)
RMH RV Parts & Acc. (Edwards RV Parts & Acc.)
Ships from
RMH RV Parts & Acc. (Edwards RV Parts & Acc.)
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Carmanah CMH-AGM-100 100 Amp AGM Deep Cycle Rechargeable Replacement Battery for PV Solar and Inverters (No Maintenance)

4.4 4.4 out of 5 stars 44 ratings
$398.00 with 16 percent savings
List Price: $475.00
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Purchase options and add-ons

Brand Carmanah
Battery cell composition Lead-Acid, AGM
Recommended uses for product RV, Boat
Unit count 1 Count
Voltage 12 Volts

About this item

  • Great for Marine, RV, Fleet, Off Grid applications
  • 110 amp hour at 100 hour rate
  • Maintenance Free and Spill Proof
  • Easy installation and carrying with built in handles
  • Designed for heavy power demands seen in Solar and Inverter applications

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Carmanah CMH-AGM-100 100 Amp AGM Deep Cycle Rechargeable Replacement Battery for PV Solar and Inverters (No Maintenance)
This item: Carmanah CMH-AGM-100 100 Amp AGM Deep Cycle Rechargeable Replacement Battery for PV Solar and Inverters (No Maintenance)
$398.00
Get it Mar 6 - 10
In Stock
Ships from and sold by RMH RV Parts & Acc. (Edwards RV Parts & Acc.).
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ECO-WORTHY 100 Watt Solar Panel 12 Volt Monocrystalline Solar Panel High Efficiency Module RV Marine Boat Caravan Off Grid
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Product description

The Carmanah CMH-AGM-100 is designed for heavy power requirements such as Solar and Inverter installations. It is easy to install and easy to carry with the built-in carry handles. It is designed for Marine, RV, Off Grid applications. The CMH-AGM-100 has gone through strenuous testing and is very reliable. It has been proven to be reliable and maintenance free for Carmanah' s Outdoor Lighting applications world-wide. This battery is an absorbed glass matt battery which is sealed. The battery recaptures its own gasses so it does not need to have distilled water added to it like a wet cell battery. The CMH-100-AGM is tested to 110 amp hours at the 100 hour rate and 105 amp hours at the 20 hour rate. The CMH-AGM-100 has outperformed brand named Group 31 batteries when tested at our facility over a number of different temperature ranges.

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Carmanah CMH-AGM-100 100 Amp AGM Deep Cycle Rechargeable Replacement Battery for PV Solar and Inverters (No Maintenance)

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Customer reviews

4.4 out of 5 stars
44 global ratings

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Customers say

Customers are satisfied with the battery's performance. They mention it provides backup power when needed. However, some customers have mixed opinions on its functionality.

AI-generated from the text of customer reviews

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Battery lifeFunctionality
10 customers mention "Battery life"7 positive3 negative

Customers like the battery life. They mention it has good current capabilities, more cycle life, and heavy-duty batteries that provide backup power when needed.

"...They have deeper discharge, higher current capabilities, more cycle life." Read more

"...is definitely heavy at 68 lbs but charges to 13.4V and holds a charge incredibly well...." Read more

"...very disapointed. My charger is working fine, but the batterie it is complet dead." Read more

"The battery is OK. Only complaint is that the bolts supplied to connect the cables to the battery posts are too short...." Read more

9 customers mention "Functionality"6 positive3 negative

Customers have mixed opinions about the battery's performance. Some say it works great and is a great product, while others report that it only holds a charge for a few cycles before being useless after a year.

"I use them to store the power from my solar panels. Seems to work well. But it is a little heavy." Read more

"Nice heavy duty batteries, working great so far." Read more

"I buy this batterie 2 years ago and now 2 years later it stop working. very disapointed...." Read more

"I like it, good product." Read more

Top reviews from Canada

  • Adam
    5.0 out of 5 stars Seems like a very good battery.
    Reviewed in Canada on July 10, 2021
    Verified Purchase
    So far so good after a couple of months in marine house battery application. Will see how long it will last in a few years.
    Helpful
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  • Nigel M Burnett
    5.0 out of 5 stars Works really well
    Reviewed in Canada on August 8, 2018
    Verified Purchase
    So far so good. Charged with 100W solar panel and a Mohoo charge controller. Disconnected panel and ran a 65W laptop full out for over an hour with negligible voltage drop. Really looking forward to installing this (and that panel) at our cabin on an island in Lake Huron next week.
    6 people found this helpful
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  • Jonathan Mark Fry
    4.0 out of 5 stars Watch the Discharge Rates and AH Capacity!
    Reviewed in Canada on October 14, 2018
    Verified Purchase
    Watch the Discharge rates and AH capacity! Select enough batteries for your loads and run time. It takes more batteries than you think to run large Inverters with heavy loads. High discharge rates lower AH capacity! 110AH @ 1.10 amps, 100AH @ 5 amps, 95.2AH @ 9.52 amps, 83AH @ 16.6 amps. Keep in cool area to extend life. Shallow discharge of 30% = 2250 cycles, 50% = 1100 cycles, 100% = 250 cycles! Charging current 30 Amps @ 14.4-15volts MAX. 13.5-13.8 float no limit. 67.5 LBS/ 30.6KG. 12.01 in/305mm long x 6.61 in/168mm wide x 8.15 in/207mm height. Terminals T14, Torque to 11-14.7Nm/97.28-130 in*lbs. Capacity corrections for temperature, 104F/40C=103% (Short lifespan), 77F/25C = 100%, 32F/0C = 86%. Internal Resistance ~4.9m ohm. Max discharge 1200A (5sec).

    Update: been running a bank of batteries for 6 years now. The bank is still doing well, showing some slight decrease in capacity. If kept within the specs, it's been holding up well. However, for the price and weight, today I would just go to a LiFePo4/LFP. They have deeper discharge, higher current capabilities, more cycle life.
    47 people found this helpful
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  • AT
    5.0 out of 5 stars Great product
    Reviewed in Canada on July 11, 2021
    Verified Purchase
    Great for my solar panels and great customer service as well. One of them arrived damaged but was replaced in 2 days.
    One person found this helpful
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  • Top Cat
    5.0 out of 5 stars Still early but so far soooo good
    Reviewed in Canada on June 27, 2019
    Verified Purchase
    Battery is definitely heavy at 68 lbs but charges to 13.4V and holds a charge incredibly well. Used with my MinnKota 50lb EnduraMax trolling motor for many hours before requiring a recharge. Excellent value in this battery.
    2 people found this helpful
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  • Adolfo
    2.0 out of 5 stars Stop keep the charge after 2 years
    Reviewed in Canada on October 2, 2022
    Verified Purchase
    I buy this batterie 2 years ago and now 2 years later it stop working.
    very disapointed. My charger is working fine, but the batterie it is complet dead.
    2 people found this helpful
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  • Leon M.
    1.0 out of 5 stars Only work for a few cycles - after that do not hold charge.
    Reviewed in Canada on January 24, 2021
    Verified Purchase
    Very unhappy with this purchase. Bought 3 of these. One arrived with bent/nearly broken post (bad packaging). I installed the other 2, the stickers on the batteries told me that they were very old - the last "installed" year possible for the end-user to mark was 2020. I got them in December of 2020. They probably sat somewhere on a shelf for 6 years.

    I charged and installed them. The first 4-5 cycles were not great but OK. Then they just stopped holding their charge. I'm finding that the 4 year-old flooded batteries that these ones replaced are way better and I thought they were completely dead.

    Absolute waste of money. I can't understand the positive reviews for this item - literally any cheapest possible starting battery would perform better. I think that I would need about 8 of these for 100Ah.

    Replacing these after 1 month of intermittent use in an RV where they run led lights and 2 fans.

    Beware!
    10 people found this helpful
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  • Ruth Pauffley
    5.0 out of 5 stars Delivered safely
    Reviewed in Canada on May 4, 2020
    Verified Purchase
    After a failed attempt to get the same item from a different company resulting in a 7 week delay (and no promise of an actual delivery date.) Purolator were great. Yes they were more expensive but they actually delivered it
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